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Morphology of the Plant Class 11 Biology NCERT notes with summary, keywords, MCQs, questions & answers for board and competitive exams.

Introduction of the Chapter: Morphology of the Plant

The chapter Morphology of the Plant from Class 11 Biology NCERT deals with the study of the external structure and form of flowering plants. Morphology refers to the study of the shape, size, structure, and arrangement of different parts of a plant such as root, stem, leaf, flower, fruit, and seed.
Understanding Morphology of the Plant is extremely important for students preparing for CBSE board exams, NEET, CUET, and other competitive examinations, as many direct and indirect questions are framed from this chapter. This chapter helps students identify plants, understand their adaptations, and classify them based on observable characters.
The chapter Morphology of the Plant also builds a strong foundation for advanced topics like plant anatomy, taxonomy, and physiology. NCERT gives special emphasis on definitions, modifications, diagrams, and examples, making this chapter scoring as well as concept-oriented.

Short Notes on Morphology of the Plant

•Morphology of the Plant studies the external features of plants.
•Root, stem, leaf, flower, fruit, and seed are major plant organs.
•Roots may be tap root, fibrous root, or adventitious root.
•Stems show modifications like tuber, rhizome, tendril, thorn.
•Leaves perform photosynthesis and transpiration.
•Flowers are reproductive organs of angiosperms.
•Fruits develop from ovary after fertilization.
•Seeds contain embryo and stored food.
•A flower can be complete or incomplete.
•Inflorescence is the arrangement of flowers on a stem.

Detailed Summary of Morphology of the Plant (800–1000 Words)

The chapter Morphology of the Plant explains the structure and appearance of different plant parts. Each plant organ performs specific functions essential for growth, reproduction, and survival.

Root

The root is usually an underground part of the plant that develops from the radicle of the embryo. Roots anchor the plant in the soil, absorb water and minerals, and sometimes store food.

Types of Root Systems:

•Tap root system: Found in dicots like mustard and gram.
•Fibrous root system: Found in monocots like wheat and rice.
•Adventitious roots: Arise from stem or leaf, seen in banyan.

Root Modifications:

•Storage roots (carrot, radish)
•Respiratory roots (pneumatophores in mangroves)
•Prop roots (banyan)

Stem

The stem develops from the plumule and bears branches, leaves, flowers, and fruits. It conducts water and nutrients.

Functions of Stem:

•Supports aerial parts
•Transports water and food
•Sometimes stores food

Stem Modifications:

•Underground stems: rhizome (ginger), tuber (potato)
•Aerial stems: tendrils (grapevine), thorns (bougainvillea)
•Sub-aerial stems: runner, stolon

Leaf

Leaves arise from nodes of the stem and are the main organs of photosynthesis.
•Leaf base
Petiole
Lamina
•Types of Leaves:
Simple leaf
Compound leaf

Leaf Modifications:

•Tendrils (pea)
•Spines (cactus)
•Storage leaves (onion)

Inflorescence

Inflorescence is the arrangement of flowers on the floral axis.
Types:
•Racemose
•Cymose
•Flower
Flower is the reproductive organ of angiosperms.
Parts of Flower:
•Calyx
•Corolla
•Androecium
•Gynoecium
Flowers may be:
•Complete or incomplete
•Bisexual or unisexual
•Actinomorphic or zygomorphic

Fruit

Fruit develops from the ovary after fertilization. It protects seeds.

Types of Fruits:

Types of Fruits:
•Simple fruit
•Aggregate fruit
•Multiple fruit

Seed

Morphology of the Plant
→ Vegetative Organs
→ Root → Types → Modifications
→ Stem → Types → Modifications
→ Leaf → Types → Modifications
→ Reproductive Organs
→ Flower → Parts → Types
→ Fruit → Types
→ Seed → Monocot / Dicot

Important Keywords with Meanings

1.Morphology – Study of external plant structure
2.Tap root – Main root system in dicots
3.Fibrous root – Cluster of roots in monocots
4.Adventitious root – Roots from non-radicle parts
5.Rhizome – Underground stem
6.Tendril – Slender climbing structure
7.Lamina – Broad part of leaf
8.Inflorescence – Arrangement of flowers
9.Androecium – Male reproductive part
10.Gynoecium – Female reproductive part

Short Answer Questions :-

1.What is morphology of the plant?

Morphology of the plant is the branch of botany that deals with the study of the external structure, form, and appearance of different plant parts such as root, stem, leaf, flower, fruit, and seed.

Define tap root system.
The tap root system is a root system in which a primary root develops from the radicle and gives rise to secondary and tertiary roots. It is commonly found in dicot plants like mustard and gram.
What are adventitious roots?
Adventitious roots are roots that arise from parts of the plant other than the radicle, such as stem or leaves. Example: prop roots of banyan.

Name any two modifications of stem.
Two modifications of stem are:
•Tuber (potato) – for storage of food
•Tendril (grapevine) – for climbing

What is lamina?
Lamina is the flat, green, expanded part of a leaf that carries out photosynthesis and transpiration.
Define inflorescence.
Inflorescence is the arrangement of flowers on the floral axis or peduncle of a plant.
What is a complete flower?
A complete flower is one that possesses all four floral whorls: calyx, corolla, androecium, and gynoecium.
What is a fruit?
A fruit is a ripened ovary formed after fertilization, which contains seeds and helps in their protection and dispersal.
Define seed.
A seed is a fertilized ovule containing an embryo, reserve food, and a protective seed coat.

Name the four parts of a flower.
The four parts of a flower are:
Calyx
Corolla
Androecium
Gynoecium

Stem modifications help plants in storage, support, protection, and vegetative propagation.

Long Answer Questions –

Below are clear, exam-oriented answers for the Short Answer Questions (10) and Long Answer Questions (10) from Class 11 Biology – Morphology of the Plant (NCERT).
Language is simple and suitable for CBSE, NEET, CUET, and school exams.

Short Answer Questions – Answers (2–3 Marks Each)

1. What is morphology of the plant?

Morphology of the plant is the branch of botany that deals with the study of the external structure, form, and appearance of different plant parts such as root, stem, leaf, flower, fruit, and seed.

2. Define tap root system.

The tap root system is a root system in which a primary root develops from the radicle and gives rise to secondary and tertiary roots. It is commonly found in dicot plants like mustard and gram.

3. What are adventitious roots?

Adventitious roots are roots that arise from parts of the plant other than the radicle, such as stem or leaves. Example: prop roots of banyan.

4. Name any two modifications of stem.

Two modifications of stem are:

Tuber (potato) – for storage of food
Tendril (grapevine) – for climbing

5. What is lamina?

Lamina is the flat, green, expanded part of a leaf that carries out photosynthesis and transpiration.

6. Define inflorescence.

Inflorescence is the arrangement of flowers on the floral axis or peduncle of a plant.

7. What is a complete flower?

A complete flower is one that possesses all four floral whorls: calyx, corolla, androecium, and gynoecium.

8. What is a fruit?

A fruit is a ripened ovary formed after fertilization, which contains seeds and helps in their protection and dispersal.

9. Define seed.

A seed is a fertilized ovule containing an embryo, reserve food, and a protective seed coat.

10. Name the four parts of a flower.

The four parts of a flower are:

Calyx
Corolla
Androecium
Gynoecium

Long Answer Questions – Answers (5–8 Marks Each)

1. Describe the different types of roots with examples.

Roots are underground parts of plants that absorb water and minerals.

Types of Root Systems:

Tap Root System:

Develops from radicle
Has a main root with branches
Found in dicots
Example: mustard, pea

Fibrous Root System:

No main root
Cluster of thin roots
Found in monocots
Example: wheat, rice

Adventitious Roots:

Arise from stem or leaves
Example: banyan, maize

2. Explain the modifications of stem.

Stem modifications help plants in storage, support, protection, and vegetative propagation.

Types:

Underground stems: rhizome (ginger), tuber (potato)
Sub-aerial stems: runner (grass), stolon
Aerial stems: tendrils (grapevine), thorns (bougainvillea)

3. Describe the structure of a leaf.

A typical leaf consists of three parts:

Leaf base: attaches leaf to stem
Petiole: stalk of the leaf
Lamina: broad green part responsible for photosynthesis

Leaves may be simple or compound and show venation patterns.

4. Explain different types of inflorescence.

Racemose Inflorescence:

Main axis continues to grow
Flowers develop in acropetal order
Example: mustard

Cymose Inflorescence:

Main axis ends in flower
Flowers develop in basipetal order
Example: jasmine

5. Describe the structure of a flower.

A flower consists of four whorls:

Calyx: protects flower in bud stage
Corolla: attracts insects
Androecium: male reproductive part
Gynoecium: female reproductive part

6. Explain different types of fruits.

Simple Fruit: develops from single ovary
Aggregate Fruit: develops from multicarpellary apocarpous ovary
Multiple Fruit: develops from entire inflorescence
Example: pineapple

7. Describe dicot and monocot seeds.

Dicot Seed:

Two cotyledons
Example: gram

Monocot Seed:

One cotyledon
Endosperm present
Example: maize

8. Explain modifications of leaves.

Leaf modifications help in climbing, protection, and storage.

Tendrils: pea
Spines: cactus
Storage leaves: onion

9. Describe different modifications of roots.

Storage roots: carrot
Respiratory roots: mangroves
Prop roots: banyan

These modifications help plants adapt to their environment.

10. Explain the importance of morphology of the plant.

The study of morphology of the plant is important for:

Plant identification
Classification
Understanding adaptations
Agricultural practices
Scoring well in exams

Below are 10 Value-Based Questions with Answers from Class 11 Biology – Morphology of the Plant (NCERT).
These are framed as per CBSE exam pattern, focusing on values, awareness, application, and scientific attitude.
Each answer is written in simple, scoring language.

Value-Based Questions: Morphology of the Plant

1. A farmer observes that mangrove plants have special roots growing above the soil. What value does this reflect and why are these roots important?

Answer:
This reflects the value of scientific awareness and environmental adaptation. These roots, called pneumatophores, help the plant breathe in oxygen-deficient, waterlogged soil. Understanding such adaptations helps in conserving mangrove ecosystems.

2. A student notices that potato is a stem and not a root. What scientific value does this observation show?

Answer:
This shows keen observation and scientific thinking. Potato has nodes and internodes, proving it is a stem. Such understanding helps students correctly identify plant parts based on morphology.

3. Why should students learn about modifications of roots and stems? What value does this knowledge promote?

Answer:
Learning about modifications promotes curiosity and practical knowledge. It helps students understand how plants adapt for storage, support, and survival, encouraging respect for plant diversity.

4. A gardener trims excess leaves from a plant to improve growth. How does the knowledge of leaf morphology support this action?

Answer:
This reflects application of scientific knowledge. Leaves perform photosynthesis, but excess leaves increase water loss. Proper trimming maintains balance and promotes healthy growth.

5. Why is the study of flower structure important for students interested in agriculture and medicine?

Answer:
This reflects career awareness and responsibility. Knowledge of flower morphology helps in plant breeding, crop improvement, and identification of medicinal plants.

6. A student carefully labels diagrams of flowers and roots in an exam. What academic values does this show?

Answer:
It shows discipline, clarity, and precision. Proper diagrams reflect clear understanding and improve communication of scientific concepts.

7. How does learning about seed structure promote environmental responsibility?

Answer:
Understanding seed structure promotes environmental awareness. Seeds help in plant reproduction and biodiversity conservation. This knowledge encourages tree plantation and sustainable practices.

8. Why is morphology of the plant important in identifying plants in daily life? What value does it add?

Answer:
It adds the value of practical life skills. Knowledge of morphology helps identify edible, medicinal, and harmful plants, ensuring safety and informed decision-making.

9. A teacher emphasizes NCERT terminology while teaching morphology of the plant. What educational value does this highlight?

Answer:
This highlights the value of accuracy and standardization in learning. Correct terminology ensures conceptual clarity and better performance in exams.

10. How does studying morphology of the plant develop respect for nature among students?

Answer: C

Assertion–Reason Questions

Directions:
Each question consists of two statements:

Assertion (A)
Reason (R)

Check both statements separately
Then see if the reason explains the assertion

Sample Question Paper

Class: XI | Subject: Biology

Chapter: Morphology of the Plant

Time: 3 Hours
Maximum Marks: 70

General Instructions:

All questions are compulsory.
The question paper consists of 4 Sections A, B, C, and D.
Draw neat and labelled diagrams wherever required.
Use proper biological terminology.

Section A – MCQs (1 × 15 = 15 Marks)

Choose the correct option:

Tap root system is found in:
a) Rice
b) Wheat
c) Mustard
d) Maize
Fibrous roots are characteristic of:
a) Dicot plants
b) Gymnosperms
c) Monocot plants
d) Bryophytes
Potato is a modification of:
a) Root
b) Stem
c) Leaf
d) Fruit
The edible part of carrot is:
a) Stem
b) Leaf
c) Root
d) Flower
Tendrils help the plant in:
a) Storage
b) Photosynthesis
c) Climbing
d) Respiration
Which part of the leaf performs photosynthesis?
a) Petiole
b) Leaf base
c) Lamina
d) Vein
Racemose inflorescence shows:
a) Basipetal succession
b) Acropetal succession
c) Random arrangement
d) Cyclic arrangement
Androecium represents:
a) Calyx
b) Corolla
c) Male reproductive part
d) Female reproductive part
Gynoecium consists of:
a) Sepals
b) Petals
c) Stamens
d) Carpels
Fruit develops from:
a) Ovule
b) Ovary
c) Seed
d) Embryo
Pneumatophores are found in:
a) Desert plants
b) Aquatic plants
c) Mangrove plants
d) Epiphytes
Which of the following is a compound leaf?
a) Mango
b) Peepal
c) Neem
d) Banyan
Onion is an example of:
a) Stem tuber
b) Rhizome
c) Storage leaf
d) Corm
A complete flower has:
a) Only calyx and corolla
b) Only androecium
c) All four whorls
d) Only gynoecium
Seed coat is derived from:
a) Ovary wall
b) Integuments
c) Endosperm
d) Cotyledons

Section B – Very Short Answer (2 × 10 = 20 Marks)

Answer any 10 questions:

Define morphology of the plant.
What is a tap root?
Define adventitious roots.
What is inflorescence?
What is lamina?
Name two underground stem modifications.
What is a bisexual flower?
Define fruit.
What is a seed?
Name any two leaf modifications.
What are prop roots?
Define fibrous root system.

Section C – Short Answer (3 × 7 = 21 Marks)

Answer any 7 questions:

Explain tap root system with example.
Describe any three functions of stem.
Write differences between simple and compound leaves.
Explain racemose inflorescence.
Describe structure of a typical flower.
Explain modifications of roots for storage.
Write differences between dicot and monocot seeds.
Describe venation in leaves.

Section D – Long Answer (5 × 3 = 15 Marks)

Answer any 3 questions:

Describe different types of roots with examples.
Explain various modifications of stem with suitable examples.
Describe the structure of a dicot seed with labelled diagram.
Explain different types of fruits.
Write the importance of morphology of the plant.

End of Question Paper

Below is the complete, exam-oriented solution / answer key of the Sample Question Paper for
Class 11 Biology – Morphology of the Plant (NCERT).
Answers are written in simple NCERT language, suitable for self-evaluation, teachers, and revision.

Solution of Sample Question Paper

Chapter: Morphology of the Plant

Section A – MCQs (15 Marks)

c) Mustard
c) Monocot plants
b) Stem
c) Root
c) Climbing
c) Lamina
b) Acropetal succession
c) Male reproductive part
d) Carpels
b) Ovary
c) Mangrove plants
c) Neem
c) Storage leaf
c) All four whorls
b) Integuments

Section B – Very Short Answer (2 Marks each)

1. Define morphology of the plant.

Morphology of the plant is the study of the external form, structure, and appearance of different plant parts.

2. What is a tap root?

A tap root is the primary root developing from the radicle, having lateral branches, found in dicots.

3. Define adventitious roots.

Roots arising from stem, leaf, or any part other than radicle are called adventitious roots.

4. What is inflorescence?

Inflorescence is the arrangement of flowers on the floral axis.

5. What is lamina?

Lamina is the broad, flat, green part of a leaf responsible for photosynthesis.

6. Name two underground stem modifications.

Potato (tuber)
Ginger (rhizome)

7. What is a bisexual flower?

A flower having both male and female reproductive organs is called bisexual.

8. Define fruit.

A fruit is a ripened ovary formed after fertilization, containing seeds.

9. What is a seed?

A seed is a fertilized ovule containing an embryo and reserve food.

10. Name any two leaf modifications.

Tendril (pea)
Spine (cactus)

11. What are prop roots?

Prop roots are adventitious roots arising from branches to provide support, as in banyan.

12. Define fibrous root system.

A fibrous root system consists of many thin roots of equal size arising from the base of the stem.

Section C – Short Answer (3 Marks each)

1. Explain tap root system with example.

Tap root system develops from the radicle and has a main root with lateral branches.
Example: mustard, gram.

2. Write any three functions of stem.

Supports aerial parts
Conducts water and food
Bears leaves, flowers, and fruits

3. Differences between simple and compound leaf.

Simple Leaf	Compound Leaf
Single lamina	Divided into leaflets
Incision not reaching midrib	Incision reaches midrib
Example: Mango	Example: Neem

4. Explain racemose inflorescence.

In racemose inflorescence, the main axis continues to grow, and flowers are arranged in acropetal order.

5. Describe structure of a typical flower.

A flower has four whorls:

Calyx
Corolla
Androecium
Gynoecium

6. Explain storage root modifications.

Roots modify to store food, become swollen and fleshy.
Example: carrot, radish.

7. Differences between dicot and monocot seeds.

Dicot Seed	Monocot Seed
Two cotyledons	One cotyledon
Endosperm absent	Endosperm present
Example: Gram	Example: Maize

8. Describe venation in leaves.

Venation is the arrangement of veins in lamina.
Types:

Reticulate
Parallel

Section D – Long Answer (5 Marks each)

1. Describe different types of roots with examples.

Roots are of three types:

Tap root (mustard)
Fibrous root (wheat)
Adventitious root (banyan)
They help in absorption, anchorage, and storage.

2. Explain modifications of stem with examples.

Underground stems: potato, ginger
Sub-aerial stems: runner
Aerial stems: tendril, thorn
They help in storage, support, and propagation.

3. Describe structure of dicot seed.

A dicot seed has:

Seed coat
Two cotyledons
Embryo with radicle and plumule
Example: gram.

4. Explain different types of fruits.

Simple fruit
Aggregate fruit
Multiple fruit (pineapple)

5. Importance of morphology of the plant.

Helps in plant identification
Useful in classification
Important for agriculture
Helps understand adaptations
Important for exams

Androecium represents A. Calyx B. Corolla C. Male organ D. Female organ Ans_20260201_172155_0000 Download