Explore topic-wise InterviewSolutions in .

(a) Explain the terms ' self-pollination' and 'cross-pollination'?
(b) How do the insects help in cross-pollination?
(c) How is the process of pollination different from fertilization?

Name the point inside the human eye where the image is not visible.

Arrange the following processes involved in the nutrition in animals in the correct order (in which they take place):
Assimilation, Egestion, Ingestion,Absorption, Digestion

Question 6
In human males, all the chromosomes are paired perfectly except one. This/these unpaired chromosome is/are

(i) Large chromosome
(ii) Small chromosome
(iii) Y-chromosome
(iv) X-chromosome

(a) (i) and (ii)
(b) (iii) only
(c) (iii) and (iv)
(d) (ii) and (iv)

One of the following in enveloped with a single membrane

The given picture depicts the surface of small intestine. What is the main reason for it to be so convoluted?

Which of the following sentence is false?

Question 2

In the absence of which of the following will photosynthesis not occur in leaves?



(a) Guard cells

(b) Chlorophyll

(c) Vacuole

(d) Space between cells

If a person is having blood group A, then he is most likely to have ___

Which of these is meant "To keep and protect from harm, loss, or change"?

Do guard cell present in plant contain cell wall?

____ are the principal organs of excretion consisting of nephrons and associated tissue.

Rashmi made a diagram of the epithelial peel of a leaf which she observed under microscope. The structure that is missing in her diagram is ___.

Which of the following statement is the correct meaning of afforestation?

John wants
the ghost to disappear before his wife enters the room and waves his
arms at the ghost with something of the motion of a beginner when
learning to swim. His movement shows his ………………………

(a) fear

(b)
amusement

(c)
desperation

(d)
anxiety

How does windmill generate electric energy?

Facultative absorption of water from primary urine is influenced by the hormone

Explain the social changes in London which led to the need for the
Underground railway. Why was the development of the Underground
criticised?

Match the following diseases and their causes.

$\begin{array}{cc}Disease& Causes\\ 1)Stroke& A)Depositionofexcessfatintheliver\\ 2)Diabetes& B)Decreaseindiameterofarteries\\ 3)Hypertension& C)Ruptureofbloodvesselsinthebrain\\ 4)Fattyliver& D)Malfunctioningofinsulin\end{array}$

Is the tunica media thicker in arteries or in veins?

Match the following columns and choose the correct option.
$\begin{array}{cc}ColumnI& ColumnII\\ \text{(a) Mutation breeding}& \text{1. Laborious and expensive}\\ & \text{process to obtain gene}\\ & \text{variation}\\ \text{(b) Selection}& \text{2. Hybrid vigour can be}\\ & \text{maintained for several}\\ & \text{generations}\\ \text{(c) Hybridisation}& \text{3. Simplest and easiest}\\ & \text{method of plant}\\ & \text{improvement}\\ \text{(d) Introduction}& \text{4. Oldest breeding method}\\ & \text{5. Quick method to obtain gene variation}\end{array}$

Which pollutants are contributed by airplanes?

Stem cells are used to replace dead cells in case of conditions like

Identify 'A' in the above image.

Question 8

Posture and balance of the body are controlled by



(a) cerebrum

(b) cerebellum

(c) medulla

(d) pons

Question 32

Colonies of yeast fail to multiply in water but multiply in sugar solution. Give one reason for this.

For the given assertion and reason, choose the correct option.

Assertion[A]: Fungi are saprophytic organisms.
Reason[R]: They lack chlorophyll and other machinery to create their own food.

Excretory organs in Periplaneta are:

Which among the following is a perfect illustration of ecological balance in nature?

Which of following could cause biological disasters?

What are the outside raw metal used for by an organism?

Which component of blood helps in clotting?