Other Root Modification

Q.

Define leguminous crops?

Q.

Saffron is obtained from which part of plants?

1. Leaf

2. Stigma and style

3. Stem

4. Anther

Q. Plants which have stems in which each node bears a rosette of leaves and a tuft of roots

1. Pistia and Eichhornia
2. Pistia and Vallisneria
3. Hydrilla and Pistia
4. Eichhornia and Hydrilla

Q.

Plants that produce characteristic pneumatophores and show vivipary belong to:

1. Mesophytes

2. Halophytes

3. Psammophytes

4. Hydrophytes

Q.

Pneumatophores occur in ?

1. Carnivorous plants

2. Free-floating hydrophytes

3. Halophytes

4. Submerged hydrophytes

Q. Choose the examples in column II with the type of root modification in column I:

Column I	Column II
A. Conical root	I. Rhizophora
B. Fusiform root	II. Turnip
C. Napiform root	III. Radish
D. Pneumatophore	IV. Carrot

1. A-I, B-III, C-IV, D-II
2. A-I, B-II, C-III, D-IV
3. A-IV, B-II, C-III, D-I
4. A-IV, B-III, C-II, D-I

Q.

What are the main functions of roots and stems in plants?

Q.

Brief about lateral roots.

Q.

Give reasons for the following statements:

Plants that grow in marshy area have breathing roots.

Q.

The type of roots present in the mustard plant is

1. fibrous roots

2. adventitious roots

3. tap roots

4. nodulated roots

Q.

Pneumatophores are found in which plants?

Q.

Negative geotropic roots are found in

1. banyan

2. monstera

3. maize

4. rhizophora

Q.

Is sweet potato homologous to turnip?

Q.

What is meant by leguminous plant? Name two pulses grown in kharif seasons and two in rabi season.

Q. Select the correct statement:
I. From the region of elongation, some of the epidermal cells form root hairs
II. Pneumatophores are seen in Sonneratia
III. Adventitious roots are seen in banyan tree
IV. Maize and sugarcane have prop roots

1. I, III and IV
2. III and IV
3. I and IV
4. II and III

Q.

Which of the following has fibrous roots?

1. Peas

2. Wheat

3. Radish

4. Neem

Q.

A basket of vegetables contains carrot, potato, radish and tomato. Which of them represent the correct homologous structures?

1. Carrot and potato

2. Carrot and tomato

3. Radish and carrot

4. Radish and potato

Q. Explain Modification of root for 3 marks

Q.

Lateral root arises from-

1. Pericycle

2. Cortex

3. Pith

4. Endodermis

Q.

Roots obtain oxygen from air in the soil for respiration. In the absence or deficiency of $O_2$, root growth is restricted or completely stopped. How do the plants growing in marsh lands or swamps obtain their $O_2$ required for root respiration?

Q. A hypothetical plant blooms every leap year and dies. In what category would you place this plant using this information?

1. Gymnosperm
2. Polycarpic plant
3. Monocarpic plant
4. Short day plant

Q.

What is meant by modification of root? What type of modification of root is found in:

(a) Banyan tree

(b) Turnip

(c) Mangrove trees

Q. Pneumatophores occur in

1. halophytes
2. free-floating hydrophytes
3. carnivorous plants
4. submerged hydrophytes

Q.

Name of plant _______, Root system ________

Q. The central portion of the root nodules of leguminous plants is red or pink when cut. This is due to the presence of

1. legumes
2. haemoglobin
3. anthocyanin
4. leg-haemoglobin

Q. Match the following
Column I Column II
A.Root X. Stipe
B.Stem Y. Frond
C.Leaf Z. Holdfast

1. A – X, B – Z, C – Y
2. A – Y, B – Z, C – X
3. A – Z, B – X, C – Y
4. A – Z, B – Y, C – X

Q.

Which part of asafoetida plant is used as food?

1. Seeds

2. Stems

3. Roots

4. Flowers

Q. Velamen present in orchids help in

1. respiration
2. absorption of moisture from air
3. synthesizing food
4. synthesizing plastids

Q.

Write a short note on stilt roots.

Q.

Name the two main systems found in plants.