(a) Chrysanthemum is the odd one out because it is a flowering plant whereas others are non flowering.

(b) Chick pea is the odd one out because it is a type of herb whereas others are types of trees

(c) Grape is the odd one out because it is a climber while remaining are shrubs.

(d) Banyan is the odd one out because it is a perennial plants whereas remaining are annual plants.

(e) Guava is the odd one out because it is a perrenial plant whereas remaining are biennial plants.

(f) Worm is the odd one out because it is an invertebrate whereas rest of them are vertebrates.

.

(a) The snail is an aquatic animal.- False
(b) Amphibians can live in air and in water.- False
(c) The function of the brain is well developed in vertebrate animals.- True
(d) The amoeba is a multicellular animal.- False

(a) A flowering plant- Tulip and lotus
(b) A non-flowering plant- Ferns and mosses
(c) A tree- Mango and neem
(d) A shrub- Lemon and Rose
(e) A creeper- Money plant and cucumber
(f) An annual plant- Jawar, and sunflower
(g) A biennial plant- Carrots and beetroot
(h) A perennial plant- Asparagus and gulmohur

The various parts of a plants are:

• Roots: Root grows below the ground surface. Roots hold the soil firmly and anchor the plant.They absorb water and minerals from the soil.
• Stems: Spread out branches to bear leaves, flowers and fruits, conducts water and minerals to different plant parts and performs functions of storage, support, protection and vegetative propagation.
• Leaf: The leaf is flat. It plays an important role in the production of food. They are called ‘food factories’ of a plant. They carry out photosynthesis, a process by which they synthesize their food. Leaves are of two types : simple and compound leaves.
• Flower:  This is the most attractive part of a plant. It is connected to the stem by a stalk which may be long or short.In plants, flower is the functional unit concerned with the sexual reproduction of plants.
• Fruits: They have different shapes and contain one or more seeds.

The functions of the roots are as follows:

• Roots help in anchoring the plant to the soil.
• Roots also help in the absorption of water and nutrients from the soil.

Classification of plants : While studying the diversity in plants, they are classified for the sake of convenience on the basis of the similarities and differences in their structure, their organs and their other characteristics.

It is necessary to classify organisms because

• Classification is a tool which helps us to deal with a great diversity. Classification allows us to understand diversity better.
• It helps in the identification of living organisms as well as in understanding the diversity of living organisms.
• Classification helps us to learn about different kinds of living organisms, their features, similarities and differences.
• It enables us to understand how complex structure of organisms evolve from simpler.

• To understand and study the features, similarities and differences between different organism, they are grouped under different categories of living forms.
• Classification ensures the study of interrelationship between various groups

Organisms can be classified on the basis of similarities and differences in their structure, their organs and other characteristics.

• Plants are classified on the basis of their height and the shape of stems, period of life cycle and habitat.
• Animals are classified on the basis of the cell structure, vertebral column, method of reproduction and habitat.

Plants which cannot stand upright, and spread on the ground are called creepers. They show characteristics like:

• their stem is very flexible, soft and green
• it grows rapidly with the help of a support

Herbs have the following characteristics:

• grow upto the size 1-1.5 metres
• they have green and flexible stems
• can live upto few months to upto two years
• examples of herbs include tulsi, parsley, mint etc.

Plants and animals are classified on the basis of different characteritics:
Plants are classified on the basis of

• height
• shape of stems
• period of life cycle
• habitat

Animals are classified on the basis of:

• cell structure
• vertebral coloumn
• method of reproduction
• habitat

There are different mechanisms by which animals protect themselves from danger such as their predators:

• Some organisms are covered by hard shells to protect themselves. Example, garden snail, tortoise etc. have a heard shell which they use to hide themselves under danger conditions.
• Star fish and porcupines have spines on their surface which they can use against their enemies.
• Organisms like chameleon and frogs can change their colours according to the surrounding environment. It is known as chamouflaging.
• Animals which are found in very cold regions have a thick layer of fat under the skin and thick fur to protect them from extreme cold conditions.