(a) Name the plant pigments present in the following :
(i) carrots (ii) tomatoes.
(b) Name the category of micromolecules of the cells whose examples include natural rubber, vitamin K etc.
( c) List any two conjugated lipids.

Name the monomer present in following polymer: (i) Nylon-6 (ii) Natural rubber (iii) Neoprene

Name the monomer present in the following polymer i) Poly vinyl chloride. Ii) Natural rubber.

Name the monomer present in following polymer. i) Nylon - 6 ii) Natural rubber iii) Neoprene.

(a) (i) Explain the preparation of Buna-N (ii) Give an example for thermosetting polymer. (b) Name the monomers used in the preparation of polythene and natural rubber.

Answer the following questions : (i) Name any two good sources of vitamin A. (ii) What are nucleotides ? (iii) Given one example of fat soluble vitamins. (iv) How are carbohydrates classified ?

(a) List the names of chemicals whose biomagnification result in following diseases in humans : (i) Minamata disease (ii) Itai Itai disease (b) Name the fertilizers whose excessive presence in water bodies results in algal bloom. What is the consequence of equtrophication ?

There are three plants A,B and C. the flowers of plant A open their petals in bright light during the day but close them when it gets dark at night. On the other hand, the flowers of plant B open their petals at night but close them during the day when there is bright light. The leaves of plant C fold up and droop when touched with fingers or any other solid object. (a) Name the phenomenon show by the flowers of (i) plant A, and (ii) plant B. (b) Name one flower each which behaves like the flower of (i) plant A, and (ii) plant B. (c) Name the phenoenon exhibited by the leaves of plant C. (e) Which plant/plants exhibit the phenomeon based on growth movements?