Morphology of flowering plants - Leaf

Study the following statements and choose the correct option. I.Buds are present in the axil of leaflets of the compound leaf. II.Pulvinus leaf-base is present in some leguminous plants. III.In Alstonia, the petioles expand, become green and synthesize food. IV.Opposite phyllotaxy is seen in guava

• a) II and IV are correct but I and III are wrong

• b) I and III are correct but II and IV are wrong

• c) I and IV are correct but II and III are wrong

• d) II, III and IV are correct but I is wrong

If a primary root continues to grow, the type of root system will be known as

• a) Secondary

• b) fibrous

• c) tap

• d) stilt

When axillary buds or terminal buds of stem gets modified into woody straight and pointed structure, it is known as

• a) Thorns

• b) Tendrils

• c) Nodes

• d) Internodes

Insectivore plants such as pitcher plant, venus fly trap have

• a) Modified leaf

• b) Modified stem

• c) Modified root

• d) All of the above

A thimble like structure is seen in

• root

• stem

• leaf

• all of the above

Which one of the following option is incorrect?

• (1) Tap roots of carrot, turnip and adventitious root of sweet potato, get swollen and store food.

• (2) Pneumatophores help to get oxygen for respiration.

• (3) Pneumatophore is found in the plants that grow in sandy soil.

• (4) A, B and C are underground roots but D grows vertically upwards.

Identify the phyllotaxy

• (1) A-Alternate, B - Opposite, C - Whorled

• (2) A- Whorled, B - Opposite, C -Alternate

• (3) A-Alternate, B - Whorled, C - Opposite

• (4) A-Whorled, B -Alternate, C - Opposite

Reserve food is mainly found in [AIIMS'2000]

• (1) underground stems

• (2) underground modifi ed tap roots

• (3) underground modifi ed adventitious roots

• (4) all of the above

A number of leafl ets arranged alternately or in opposite manner is known as

• (1) simple leaf

• (2) pinnately compound leaf

• (3) palmately compound leaf

• (4) none of the above

Whorled, simple leaves with reticulate venation are present in

• (1) Calotropis

• (2) Neem

• (3) China rose

• (4) Alstonia