Nutrition in Plants

Question 1: 
Fill in the blanks.

1. In photosynthesis solar energy is captured by the pigment called chlorophyll.
2. During photosynthesis plants take in carbon dioxide and release oxygen.
3. Stomata in plant take in carbon dioxide from the air for photosynthesis.
4. Carbohydrates are the products of photosynthesis.
5. Solar energy is converted into chemical energy during photosynthesis.

Question 2: 
True/False

1. The food synthesized by the plants is stored as starch. True
2. Plants take carbon dioxide from the atmosphere mainly through their leaves. True
3. Solar energy is converted into electrical energy during photosynthesis. False
4. Carbon dioxide is released during photosynthesis. False
5. The starch is also a carbohydrate. True

Question 3: 
Match the organisms given in column I with their mode of nutrition given in column II.

Answer: 

Question 4:  
Organisms which prepare food for themselves using simple naturally available raw materials are referred to as
(a) heterotrophs
(b) autotrophs
(c) parasites
(d) saprophytes. 

Answer: 

(b) autotrophs 

Question 5: 
In the absence of which of the following, will photosynthesis not occur in leaves?
(a) Guard cells
(b) Chlorophyll
(c) Vacuole
(d) Space between cells

Answer:  (b) Chlorophyll

Question 6: 
Which of the following statements is/are correct?
(i) All green plants can prepare their own food.
(ii) Most animals are autotrophs.
(iii) Carbon dioxide is not required for photosynthesis.
(iv) Oxygen is liberated during photosynthesis.
Choose the correct answer from the options below.

(a) (i) and (iv)

(b) (ii) only

(c) (ii) and (iii)

(d) (i) and (ii)

Answer: 

(a) (i) and (iv)

Question 7: 
Pitcher plant traps insects because it
(a) is a heterotroph
(b) grows in soils which lack in nitrogen
(c) does not have chlorophyll
(d) has a digestive system like human beings. 

Answer: 

(b) grows in soils which lack in nitrogen

Question 8: 
The term that is used for the mode of nutrition in yeast, mushroom and bread mould is
(a) autotrophic
(b) insectivorous
(c) saprophytic
(d) parasitic

Answer: 

(c) saprophytic

Question 9: 
When we observe the lower surface of a leaf through a magnifying lens we see numerous small openings. Which of the following is the term given to such openings?
(a) Stomata
(b) Lamina
(c) Midrib
(d) Veins 

Answer: 

(a) Stomata

Question 10: 
Two organisms are good friends and live together. One provides shelter, water and nutrients while the other prepares and provides food. Such an association of organisms is termed as
(a) saprophyte
(b) parasite
(c) autotroph
(d) symbiosis

Answer: 

(d) symbiosis

Question 11: 

Which of the following raw materials is available in the air for photosynthesis?

(a) Oxygen
(b) Carbon dioxide
(c) Nitrogen
(d) Hydrogen

Answer: 

(b) Carbon dioxide

Question 12: 
Unscramble the following to form terms related to modes of nutrition.
(i) RASPAEIT
(ii) ROPEHYTSAP
(iii) TOROPHAUT
(iv) SIBIOMSYS

Answer: 

(i) PARASITE         

(ii) SAPROPHYTE 

(iii) AUTOTROPH 

(iv) SYMBIOSIS

Question 13: 
Photosynthesis requires chlorophyll, and a few other raw materials. Add the missing raw materials to the list given below:
Water, minerals, (a)______(b)_______ 

Answer: 

(a) Sunlight energy  (b) Carbon dioxide

Question 14: 
Name a parasitic plant with yellow, slender and tubular stem.

Answer: 

Cuscuta

Question 15: 
Give one example of parasite.

Answer: 

Amarbel

Question 16: 
Name one plant that traps and feeds on insects.

Answer: 

Pitcher Plant

Question 17: 
Name a plant that has both autotrophic and heterotrophic mode of nutrition.

Answer: 

Insectivorous Plant

Question 18: 
What are legume plants examples?

Answer: 

Example: gram, peas, moong, beans

Question 19: 
Which nutrient do legumes return to the soil?

Answer: 

Nitrogen

Question 20: 
What are fluffy umbrella-like patches growing on rotting wood during the rainy season called?

Answer: 

These organisms are called fungi.

Question 21:
How can cells be seen?

Answer: 

Most type of cells can be seen only under the microscope.