Cell make up A; A make up B; B make up C, and finally C make up an organism. What are A, B, and C ?

The part of P and Q are present only in plant cells, and they are not present in animal cells. The part P contains a green pigment called R whereas part Q is made of a tough material S. The part P takes part in the food making process whereas part Q gives shape and support to the plant cell.

(a) What is (i) P, and (ii) Q?

(b) What is (i) R, and (ii) S?

A, B, C and D are the basic part of all the cells. The part A contains thread- like structures called E which transfer the characteristic from parents to their offsprings. The part B uses glucose and oxygen to produce energy whereas part C controls the movement of substance into the cell. The part D is a transparent, jelly-like material. What could A, B, C, D and E be ?

X and Y are the two types of cells. The cells X have a well organized nucleus which is separated from the cytoplasm by the nuclear membrane On the other hand, cells Y do not have a real nucleus, their nuclear material is in direct contact with the cytoplasm.

(a) what type of cells are

(i) X, and (ii) Y ?

(b) Give one example each of cells like

(i) X, and (ii) Y ?

The cytoplasm of the cells of a tomato plant contains organelles X having different pigments which impart different colours to the leaves of tomato plants and its fruits.

(a) What is the general name of the organelles X ?

(b) What is the (i) name (ii) colour, and (iii) function, of organelles X present in the leaves of Tomato plant?

(c) What is the colour of organells X which are present in the ripe fruits of tomato plant ?