Q10 of 61 Page 1

Write the names of those parts of a flower which serve the same function as the following do in the animals:

(i) testis (ii) sperm (iii) ovary (iv) egg

(i) Anther of a flower serves the same function as the testis do in the animals.

(ii) Pollen grains of a flower serves the same function as the sperms do in the animals


(iii) Ovary of a flower serves the same function as the ovary do in the animals


(iv) Ovum or egg of a flower serves the same function as the egg do in the animals


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Draw a ray diagram to show the path of the reflected ray corresponding to an incident ray which is directed parallel to the principal axis of a convex mirror. Mark on it the angle of reflection.

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Consider two elements 'A' (Atomic number 17) and 'B' (Atomic number 19):

(i) Write the positions of these elements in the modern periodic table giving justification.


(ii) Write the formula of the compound formed when 'A' combines with 'B'.


(iii) Draw the electron dot structure of the compound and state the nature of the bond formed between the two elements.

 10

State the function of flowers in the flowering plants.

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Mendel crossed tall pea plants with dwarf pea plants in his experiment. Write his observations giving reasons on the F1 and F2 generations.