Question

Name any two aquatic habitats.
17. Roots conduct water to the leaves ( state true or false. If the statement is wrong,
write the correct statement.)
18. Fog appearing on a cold winter morning is due to----
19. The major part of air is oxygen. ( State true or false. If the statement is wrong, write
the correct statement.)
20. A device used to image the sun and brightly lit objects.
21. A simple device that either breaks the circuit or completes it.
22. Name the gas which is
(i) consumed (ii) produced during burning
23. Name the process of collecting rain water for future use.
24. Name two abiotic factors important for the growth of plants
25. Name the part of the plant which produces its food. Name this process

Answer 1

Answer:

16.Communities of organisms that are dependent on each other and on their environment live in aquatic ecosystems. The two main types of aquatic ecosystems are marine ecosystems and freshwater ecosystems.

17.True.

18.Fog appearing on a cold winter morning is due to to the condensation of the atmospheric water vapour near the surface of the earth.

19.False.Major part of air is nitrogen.

20.Pinhole camera

21.electric switch

22.(i)Oxygen.

(ii)Carbon Dioxide.

23.Rainwater harvesting.

24.The two most important abiotic factors affecting plant primary productivity in an ecosystem are temperature and moisture.

25.Leaf.Photosynthesis.