Population - The increasing numbers and rising problems — Biology STD 10 — Question

The ____________ is the most powerful organ in the circulatory system.

The last census in India was taken in the year ______.

Radiant energy is converted into chemical energy by photosynthesis.

Carbon dioxide enters the leaf through ___________ .

Too much light destroys chlorophyll.

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

________ is the organ of balance and hearing in the body.

The human female gonads are ovaries. A maturing egg in the ovary is present in a sac of cells called ___________(i). As the egg grows larger, the follicle enlarges and gets filled with a fluid and is now called the ___________ (ii) follicle. The process of releasing the egg from the ovary is called ___________ (iii). The ovum is picked up by the oviduct funnel and fertilisation takes place in the ___________ (iv). In about a week, the blastocyst gets fixed in the endometrium of the uterus and this process is called ___________ (v).

Openings found on the undersurface of the dorsiventral leaf are ___________.

Both ______ and heterotypic divisions occur in meiosis.