Biology Chapter 1

2. a method of growing plants without the use of soil
4. chemical compounds present in our food which are essential for our body
6. penicillin is derived from a common fungus known as
10. living organism on which parasite depends for its nutrition
12. product of photosynthesis which is stored as starch
14. bacterium living in an association with roots of leguminous plants
15. symbiosis between alga and fungus
16. organism which can prepare their own food with the help of raw materials from the environment
17. aquatic plants which altogether produce more oxygen than land plants
18. mutually beneficial relationship established between 2 organisms living together
19. sucking roots in parasitic plants which penetrate into the host tissue
20. an organism which derives food from another living organism

1. organisms which depend on plants directly or indirectly for nutrition
3. conducting tissues in plants for transport of water and minerals
5. source of energy for chemical reactions in photosynthesis
7. organelle present in leaf which contains chlorophyll
8. small openings present on the lower surface of the leaves
9. chemical substances used in fields to enrich it with nitrogen
11. coloured mushrooms which are poisonous and inedible
13. plants which exhibit a special mode of autotrophic and heterotrophic nutrition