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Find the correct level of the organisation that is observed in organisms.

What provides energy for the movement of sperm?

In which of the following are all functions of the body carried out by a single cell?

The leaves turn and become yellow due to deficiency of:

(a) What are the female gametes in humans called ?

(b) Name the organs which produce female gametes.

Name one non-metal used for making fertilisers.

What is the common name of the bulge (or projection) at the front of throat in grown up boys ?

Identify the organism, which can be used as the best bio-fertilizer?

What measures can be taken to prevent the spread of communicable diseases?

When can a medical practitioner know if the growing baby inside the mother'a womb is a boy or girl?

Weeds affect the crop in which of the following ways?

The loss of water in the form of water vapour through the stomata of leaves is known as___.

There are different organisms. Some of them are multi cellular and some of them are uni cellular. The process carried out by a group of cells in multi cellular organisms are carried out by one single cell in uni cellular organisms. How is this possible?

Which of the following is not an adaptation for anemophily?

Explain the interaction within biotic components of environment and energy flow

State the age at which adolescence usually begins and the age up to which it lasts.

Can micro-organisms be seen with the naked eye ? If not,how can they be seen ?

What will happen if the natural habitat of a wild animal is destroyed?

How do the irrigation requirements of a wheat crop differ from that of a paddy crop ?

Identify the odd combination of habitat and the particular animal concerned.

Identify the material noun in the sentence.

The best sketch can only be made by using charcoal.

Why is olive oil used in the experiment to demonstrate absorption in plants?

The ___ forms an insulating layer, surrounding the axon.

Which of these is an end product of anaerobic respiration?

An outgrowth from the parent's body, that occurs as a part of asexual reproduction is known as a __.

Which of the following is/are not the points of the cell theory?

What will happen if.

A)we go on cutting trees

B) the habitat of an animal is disturbed

C) the top layer of soil is exposed.

Answer elaborately.

The phenomenon of producing seeds without fertilization is known as

Match the following:

$\begin{array}{cccc}& \text{A}& & \text{B}\\ 1.& \text{Androecium}& \text{a}& \text{Whorl of sepals}\\ 2.& \text{Gynoecium}& \text{b}& \text{Whorl of petals}\\ 3.& \text{Corolla}& \text{c}& \text{Whorl of stamens}\\ 4.& \text{Calyx}& \text{d}& \text{Whorl of pistil/carpel}\end{array}$

Which of the following is the correct sequence for the pulmonary circuit?

What type of fertilisation takes place in hen?

Two important steps in soil preparation are;

The pressure generated in the roots that assist in driving water, minerals and ions from the soil in upwards directions into the plant’s xylem is known as ___.

The year in which cell was discovered:

What was the name of the insecticide used for Tea Mosquito Bug (TMB) ?

The conditions necessary for germination is/are

Identify the foul practices which leads to the pollution of river Ganga.

To make a person lie down and keep him/her calm is one of the immediate help given to a victim of snake bite. Such help is called as____________