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10. In cactus, photosynthesis is carried out in
(a) leaves
(b) spines.
(c) stem
(d) roots
11. Which of the following is an example of symbiosis?
(a) Algae
(b) Lichen
(c) Fungi
(d) Cuscuta
12. During photosynthesis,
(a) light energy is converted into mechanical energy
(b) chemical energy is converted into light energy.
(c) solar energy is converted into chemical energy.
(d) chemical energy is converted into mechanical energy.
13. What is the ultimate source of energy for all living organisms?
(a) Solar energy (b) Water energy (c) Muscular energy (d) Wind energy
14. Tiny pores on the surface of leaves through which gaseous exchange takes place are known as
(a) guard cells. (b) stomata. (c) chlorophyll. (d) lenticels.
15. The process by which plants make their food is known as
(a) photolysis. (b) photosynthesis. (c) respiration. (d) chemosynthesis.
16. Stomatal opening is surrounded by
(a) epidermal cells. (b) chloroplasts. (c) guard cells. (d) chlorophyll.
17. Human beings are
(a) autotrophs. (b) heterotrophs. (c) saprophytes. (d) parasites.
18. Insectivorous plants eat insects to overcome the deficiency of
(a) nitrogen.
(b) hydrogen
(c) oxygen.
(d) enerov
Answers
Heyo !!!
Here's the answer !!
10)In Cactus , photosynthesis is carried out by
(c) stem
In cactus, the leaves are reduced to spines to prevent transpiration. Hence , the stem is modified into photosynthetic Phylloclade to perform photosynthesis.
11) which of the following is an example of symbiosis?
(b)Lichen
Lichen is formed by the mutual ( symbiotic) relationship between algae and fungi.
12) During photosynthesis,
c) solar energy is converted into chemical energy.
Solar energy is trapped by the chlorophyll in the chloroplasts and converted into Chemical energy (glucose) via photosynthesis.
13) what is the ultimate source of energy for all living organisms?
a) solar energy
Solar energy is the ultimate source for all living organisms since photosynthesis is the basic process for production of biological energy .
14) Tiny pores on the surface of leaves through which gaseous exchange takes place is known as
b) stomata
Stomata are the pores on the surface of leaves that play major role in gaseous exchange.They are known as nostrils of the plants.
15)The process by which plants make their own food is known as
b) Photosynthesis
Photosynthesis is the process by which the plants convert the solar energy into chemical energy that is utilised by them .
16)Stomatal opening is surrounded by
c) Guard cells
Stomatal opening or Stomatal aperture is surrounded by special cells called Guard cells which Guard the opening and closing of the Stomata.
17)Human beings are
b)Heterotrophs
Human beings are heterotrophs since they are achlorphyllous and can't make their own food.They depend on other organisms for their food needs.
18) Insectivorous plants eat insects to overcome the deficiency of
a)Nitrogen
Insectivorous plants grow in Nitrogen deficient soils.In order to overcome that they feed on insects .
Hope This helps you :)
BeBrainly
10.Stem
11.Lichen
12.light energy is converted into chemical energy
13.Solar energy
14.Stomata
HOPE IT WILL HELP YOU