NUTRITION IN PLANTS

Organisms which prepare food for themselves using simple naturally available raw materials are referred to as

• heterotrophs
• autotrophs
• parasites
• saprophytes

In the absence of which of the following will photosynthesis not occur in leaves?

• Guard cell
• Chlorophyll
• Vacuole
• Space between cells

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:

• (i) and (iv)
• (ii) only
• (ii) and (iii)
• (i) and (ii)

Pitcher plant traps insects because it

• is a heterotroph.
• grows in soils which lack in nitrogen.
• does not have chlorophyll.
• has a digestive system like human beings.

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

When we observe the lower surface of a leaf through a magnifying lens we see numerous small openings. Which ofthe following is the term given to such openings?

• (a) Stomata
• (b) Lamina
• (c) Midrib
• (d) Veins

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

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

• OXYGEN
• CO2
• Nitrogen
• Hydrogen

Potato and ginger are both underground parts that store food. Where is the food prepared in these plants?

• Root
• Leaf
• Stem
• Flower

A red leaf can prepare food because it has pigments

• chlorophyll
• xanthophyll
• carotene
• lycoprene