Exercise

Fill in the blanks:

1. Green plants are called ______ since they synthesise their own food.

Ans: autotrophs

2. The food synthesised by the plants is stored as ______.

Ans: starch

3. In photosynthesis, solar energy is captured by the pigment called _____.

Ans: chlorophyll

4. During photosynthesis plants take in _____ and release _____.

Ans: carbon dioxide, oxygen

Give two examples for the following:

1. Autotrophic plants

2. Parasitic plants                  

3. Saprophytic plants   

4. Insectivorous plants          

5. Symbiotic plants

Name the following:

1. A parasitic plant with yellow, slender and tubular stem.

Ans: Cuscuta (dodder)

2. A plant that has both autotrophic and heterotrophic mode of nutrition.

Ans: Insectivorous plant

3. The pores through which leaves exchange gases.

Ans: Stomata

Tick the Correct Answer:

1. Amarbel is an example of:

(i) autotroph

(ii) parasite

(iii) saprotroph

(iv) host

Ans: (ii)

2. The plant which traps and feeds on insects is:

(i) cuscuta

(ii) china rose

(iii) pitcher plant

(iv) rose

Ans: (iii)

3. Carbon dioxide is obtained from the atmosphere through the

(i) grana

(ii) stomata

(iii) stroma

(iv) thylakoid

Ans: (ii)

4. Plant tissues that help in conducting prepared food from leaves to the roots are the

(i) phloem 

(ii) xylem

(iii) guard cells 

(iv) both xylem and phloem

Ans: (i)

5. Which of these plants live off rotting material?

(i) Parasitic

(ii) Symbiotic

(iii) Insectivorous

(iv) Saprophytic

Ans: (iv)