Chemical coordination in plants — Biology STD 10 — Question

Land plants obtain their carbon dioxide from the ______.

Sterilization in female is due to cutting off of ______. (ovary, oviduct)

___________ produces Human Chorionic Gonadotropin (HCG) and protects the embryo.

(i) _____________ are positively thigmotropic because they grow towards the support in response to contact. (ii) _____________ inhibits the effect of other hormones. (iii)_____________ Response to stimuli is a characteristic feature of all living organisms. (iv) _____________ synthesize auxins from the amino acid Tryptophan. (v) _____________ is the directional growth movement of the plant part in response to a chemical stimulus.

The sum of all the chemical reactions taking place in the cell is known as ____________ .

Raisin swells up when kept in a __________ solution.

In mammals, the female is homozygous while the male is ________ .

The medulla oblongata is also known as the_________.

Given below are hypothetical figures in regard to population (in crores) of two countries A and B during the last three decades.

Country	1971	1981	1991
A	6.4	9.6	10.6
B	15.7	15.7	15.3

Fill in the blanks :The country _________ shows zero population growth between years __________ and __________.

No transpiration occurs during photosynthesis.