NCERT Solutions Class 11 Biology Chapter 5

NCERT Solutions for Class 11 Biology Chapter 5 – Morphology of Flowering Plants

Biology is important in Class 11 for students who want to pursue a career in medicine. To help students prepare better for exams, Extramarks offers NCERT Solutions for Class 11 Biology Chapter 5. The team at Extramarks have made stringent efforts to provide accurate solutions to the students. The students can find the answers to all the NCERT Biology Class 11 Chapter 5 textbook questions at one place. 

The solutions can be accessed from the website or Extramarks app.

NCERT Solutions for Class 11 Biology Chapter 5 – Morphology of Flowering Plants

Access NCERT Solutions for Class 11 Biology Chapter 5 here.

NCERT Solutions for Class 11 Biology Chapter 5 – Morphology of Flowering Plants

Here’s an overview of the questions that are included in the NCERT Solutions for Class 11 Biology Chapter 5 by Extramarks:

Q1. What is modification of root? Explain the type of modification of root found in: a) Banyan tree b) Turnip c) Mangrove tree

A1. There are plants that modify their roots for performing functions that are different from conductivity and absorption. The modification of roots can change the shape or structure of the plant. 

Let’s look at the type of modification of root found in:

Banyan Tree – A banyan tree has prop roots that are massive and pillar-like, supporting the entire structure.

Turnip – Turnip modifies its roots for food storage.

Mangrove Tree – The mangrove tree has vertical roots that grow upward. These roots are pneumatophores, thus helping the plant in getting oxygen for respiration. 

Q2. Based on the external features, justify the statements given below

  1. Flower is a modified shoot
  2. Root is not always the underground part of the plant

A2. 

  1. The flower is a modified shoot

During the flowering season, the floral meristem rises from the apical meristem. During this process, the axis of the stem also gets condensed and internodes lie near each other. As a result different floral appendages come from the node in place of leaves. Thus, we can say that the root is not always the underground part of the plant.

  1. The root is not always the underground part of the plant 

Many parts of plants such as leaves, stems, and even fruits undergo modification and become underground structures to perform several functions. For example, banana and ginger have underground stems that are swollen because of the storage of food. The basal leaves in onion are fleshy due to the food stored in them.

Q3. Explain the different types of phyllotaxy with some examples.

A3. Phyllotaxy is the arrangement or pattern of leaves on a branch or stem. It has the following categories – opposite, alternate, and whorled. 

In an alternate phyllotaxy plant, a single leaf comes from the node. For example – mustard, sunflower, and peepal plant.

In an opposite phyllotaxy plant, two leaves emerge opposite each other from the node. For example – Jamun and guava plant.

In a whorled phyllotaxy plant, a leaf comes from a node that has three or more leaves. For example Alstonia.

NCERT Solutions for Class 11 Biology Chapter 5 – Morphology of Flowering Plants

It is important for students to know what all topics are included in Class 11 Biology Chapter 5. Here’s an overview:

  • The Root
  • The Stem
  • The Leaf
  • The Inflorescence
  • The Flower
  • The Fruit
  • The Seed
  • Semi-technical Description of a Typical Flowering Plant 
  • Description of Some Important Families

Introduction

The chapter starts with an introduction to the different structures in higher plants. It says that angiosperms have common characteristics such as the presence of flowers, roots, stems, leaves, and fruits, even in diversity. It talks about the importance of knowing the variations of plants, the significance of variations, weeds, and other concepts.

The Root

The section explains how primary roots and their branches make the tap root system. The main functions of the root system, regions of the root, and modifications of the root are also discussed.

The Stem 

The section describes differentiating features of root and stem. It also covers the aspects of modifications of the stem in detail.

The Leaf 

The section talks about the leaves of plants. The other topics covered are – venation, types of leaves, phyllotaxy and modification of leaves. 

The Inflorescence 

The Inflorescence talks about the arrangement of flowers in plants. The types of inflorescence are explained in detail.

The Flower 

In this section, a flower is discussed as the reproductive component in angiosperms. The section also describes the detailed structure of a typical flower, perianth, symmetry of flower, and other related concepts.

The Fruit 

A fruit is a trait of flowering plants. The section discusses fertilisation, parts of fruit, and drupes.

The Seed 

The section talks about the formation of seeds, parts of seeds, structure of dicotyledonous and monocotyledonous seeds.

Semi-Technical Description of a Typical Flowering Plant

The section discusses the different morphological characters used to depict a flower. The features of the description are also descriptive in scientific yet simple language. Symbols for corolla, calyx, androecium, bracteates, perianth, gynoecium, and more are discussed in detail.

Description of Some Important Families  

The section talks about the economic importance and vegetative and floral characters of the three families of plants i.e. Solanaceae, Fabaceae and Liliaceae.

About Extramarks

NCERT Solutions for Class 11 Biology Chapter 5 by Extramarks includes all the answers to NCERT textbook questions with in-depth explanations. Extramarks is a leading online learning platform that provides learning app and live classes to deliver a seamless and wholesome learning experience to students.

In addition to solutions, students can also refer to other learning materials such as past years’ question papers, mock tests, and sample papers on Extramarks.

Related Questions

Q1. Which part of the tobacco plant is infected by Meloidogyne incognita?

  1. Flower
  2. Leaf
  3. Stem
  4. Root

Q2. The seeds in the balsam plant fall off far away from the mother plant.

  1. Is this statement true or false?
  2. Explain the reason behind the same.

Q3. Which family of plants is a rich source of protein?

  1. Cruciferae
  2. Leguminosae
  3. Liliaceae
  4. Compositae

FAQs (Frequently Asked Questions)

Students should refer to Extramarks for NCERT Solutions for Class 11 Biology Chapter 5. The online learning platform has a dedicated team of subject-matter experts to prepare solutions for Class 1-12.

Morphology is made of two Greek words – Morphos and Logos. Morphos means to form and logos means study. In simple words, Morphology is a branch of science dealing with the research of the form as well as the structure of things. Morphology is characterised by the presence of leaves, stems, roots, flowers, and fruits. Chapter 5 of Class 11 Biology includes the study of different aspects such as structure, shape, colour pattern, size, and appearance. The two branches of Morphology are also studied in the chapter.

There are two types of compound leaves:

Pinnately compound leaves – These leaves have leaflets set along the middle vein. Pinnately compound leaves are divided into four types.

Palmately compound leaves – These are similar to palm branches. However, the leaflets are diverged and connected to the head of the petiole.