Question 7: Name the following:
(a) A parasitic plant with yellow, slender and tubular stem.
(b) A plant that has both autotrophic and heterotrophic mode of nutrition.
(c) The pores through which leaves exchange gases.
Answer: (a) Amarbel (cuscuta), (b) pitcher plant, (c) stomata
Question 8: Tick the correct answer:
(a) Amarbel is an example of:
(i) Autotroph
(ii) Parasite
(iii) Saprotroph
(iv) Host
Answer: (ii) Parasite
(b) The plant which traps and feeds on insects is:
(i) Cuscuta
(ii) China rose
(iii) Pitcher plant
(iv) Rose
Answer: (iii) Pitcher plant
Question 9: Match the items given in Column I with those in Column II:
Column I | Column II |
---|---|
(1) Chlorophyll | (a) Bacteria |
(2) Nitrogen | (b) Heterotrophs |
(3) Amarbel | (c) Pitcher plant |
(4) Animals | (d) Leaf |
(5) Insect | (e) Parasite |
Answer: 1 → d, 2 → a, 3 → e, 4 → b, 5 → c
Question 10: Mark âTâ if the statement is true and âFâ if it is false:
(i) Carbon dioxide is released during photosynthesis.
(ii) Plants which synthesise their food themselves are called saprotrophs.
(iii) The product of photosynthesis is not a protein.
(iv) Solar energy is converted into chemical energy during photosynthesis.
Answer: (i) F, (ii) F, (iii) T, (iv) T
Question 11: Choose the correct option from the following:
(a) Which part of the plant gets carbon dioxide from the air for photosynthesis?
(i) Root hair
(ii) Stomata
(iii) Leaf veins
(iv) Sepals
Answer: (ii) Stomata
(b) Plants take carbon dioxide from the atmosphere mainly through their:
(i) Roots
(ii) Stem
(iii) Flowers
(iv) Leaves
Answer: (iv) Leaves
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