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Which part of our ear is shaped like a snail shell ?
(a) Semi-circular canals (b) Cochlea
(c) Stapes (d) Eustachian tube

Match the given cells with their characteristics.

$\begin{array}{cc}\text{Column I}& \text{Column II}\\ \left(i\right)\text{Monocyte}& \left(a\right)\text{secretes serotonin, histamine, heparin}\\ \left(ii\right)\text{Neutrophil}& \left(b\right)\text{forms about 20\% of WBC is involved in immune response}\\ \left(iii\right)\text{B-Lymphocytes}& \left(c\right)\text{most abundant white blood cells, phagocytic}\\ \left(iv\right)\text{Basophil}& \left(d\right)\text{life span of 3 days, produces antibodies}\end{array}$

What is the difference between an organ and an organelle?

The diagram below represents a stage during cell division. Study the same and then answer the questions that follow :
(a) Name the parts labelled 1, 2 and 3.
(b) Identify the above stage and give a reason to support your answer.
(c) Mention where in the body this type of cell division occurs.
(d) Name the stage prior to this stage and draw a diagram to represent the same.

In what way are homologous organs evidence for evolution?

The bending of the shoot of a plant in response to light is called :

(a) geotropism

(b) phototropism

(c) thigmotropism

(d) photonasty

Match the following:

$$\begin{array}{cccc}& \text{A}& & \text{B}\\ \text{1}& \text{Bile juice}& \text{a}& \text{Carbohydrate digestion}\\ \text{2}& \text{Trypsin}& \text{b}& \text{Digestion of fats}\\ \text{3}& \text{Lipase}& \text{c}& \text{Emulsification of fats}\\ \text{4}& \text{Amylase}& \text{d}& \text{Digestion of proteins}\end{array}$$

Which of the following are the genetic traits?

Situations

The
nightingale is awestruck when the frog introduces himself.

_____________ is a colourless plastid.

Which is considered as raw materials for evolution?

Question 29

The opening and closing of the stomatal pore depends upon



(a) Oxygen

(b) Temperature

(c) Water in the guard cells

(d) Concentration of ${\text{CO}}_2$ in stomata

Where is lactic acid formed during respiration?

Write the complete reaction of photosynthesis.

(a) Give one example each of a unisexual and a bisexual flower
(b) Mention the changes a flower undergoes after fertilisation.
(c) How does the amount of DNA remain constant though each new generation is a combination of DNA copies of two individuals?

It is ironical that though the poor children are hungry for knowledge

_______________________________________________________________

Which one of the following is not a part of the renal pyramid?

Motility is acquired by sperms in

In the respiratory system, the primary sites of gaseous exchange with blood vessels are:

The production of _______ hormone makes us sleepy.

Doctors use stethoscope to hear the sound produced during each cardiac cycle. The second sound is heard when:

A plant hormone used for introducing morphogeneis in plant tissue culture is ???

The stors of cloning of Dolly

Name the blood vessel that has the highest concentration of urea after a protein-rich meal.

Why is it necessary for the brain to interact with the stomach even though it is mostly an involuntary process?

Describe nervous system and function.

Who detects the sensation of feeling full, diencephalon or hypothalamus?

State any five function of the blood.

Which substance is used to remove chlorophyll from a green leaf during photosynthesis experiments?

How is food digested in mouth? For 1,&,3marks

Define residual volume of air

A person with type AB blood is considered universal recipient. He would have ______ antigens on red blood cells, and _______ antibodies in the plasma.