The Endocrine System — Biology STD 10 — Question

___________ is the innermost membrane that closely covers the embryo when first formed.

Rubber particles and dust raised by running motor vehicles are examples of __________ pollutants.

The first remarkable human fossil was that of ________.

Population increase in ___________ ratio while food production increases in arithmetic ratio.

Choose the odd one out from each series
The conditions – cretinism, myxoedema, goiter, scurvy
………………………………………….

Complete the following table :

Components	Origin	Function	Approx. No. (per mm3)	Life span
RBCs
WBCs
Platelets

Openings found on the under surface of the leaf are _____________

The release of hot water into rivers causes ______.

Osmosis is the diffusion of________________ molecules from the region of their________________ concentration to the region of________________ concentration through a semi-permeable memberane.

In humans, sex is completely determined by the ________ (i)_______ not depend on the ________ (ii) ________ . Typically, a female has two ________ (iii) ________ chromosomes, while a male has one ________ (iv) ________ and one ________ (v) ________ chromosome.