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A Planaria worm is cut horizontally in the middle into two halves P and Q such that the part P contains the whole head of the worm. Another Planaria worm is cut vertically into two halves R and S in such a way that both the cut pieces R and S contain half head each. Which of the cut pieces of the two Planaria worms could regenerate to form the complete respective worms?
(a) only P
(b) only R and S
(c) P, R and S
(d) P, Q, R and S

What is the major advantage of natural selection in a population?

A certain patient is suspected to be suffering from acquired immune deficiency syndrome. Which diagnostic technique will you recommend for its detection?

Write the functions of the following in digestive process:

a) Bile

b) Pancreatic amylase

c) Bicarbonate secreted by the duodenal walls

Match the following

$\begin{array}{cc}\text{Column - I}& \text{Column-II}\\ \text{(i) Dicliny}& \text{(a) Development of sterile pollen or ovary}\\ \text{(ii) Dichogamy}& \text{(b) Anthers and stigma are placed at different position}\\ \text{(iii) Herkogamy}& \text{(c) Pollen release and stigma receptivity are not synchronised}\\ \text{(iv) Self sterility}& \text{(d) production of unisexual flowers}\end{array}$

Which of the following is the emergency hormone?

Some of the steps involved in Gene Cloning are given below. Arrange them in correct order

(a) insertion of isolated gene to the vector (b) introduction of recombinant vector to the host

(c) isolation of desired gene (d) expression of recombinant gene in the host

Question 24

The theory of evolution of species by natural selection was given by



(a) Mendel

(b) Darwin

(c) Morgan

(d) Lamarck

Which of the following carries substances upwards as well as downwards in a plant ?
(a) xylem
(b) companion cells
(c) phloem
(d) tracheids

Water absorption through roots can be increased by keeping the plants:

Which of the following is aerosol?

Question 3

The brain is responsible for



(a) Thinking

(b) Regulating the heartbeat

(c) Balancing the body

(d) All of the above

Ali did not come to the
Post Office for several days as _____________________.

(i) he had given up
hope

(ii) he was upset by
the Post Master's rebuke

(iii) he was unwell and
not able to walk to the Post Office

(iv) he was busy
hunting

Chlorophyll is a green pigment. It is essential for photosynthesis.

Given this information, can you guess which area of the leaf shown below will photosynthesize?

Consider the following statements -

Which will be used as the internal energy when the plants suffer lack of energy?

Which of the following methods were used to study human evolution ?

What is the difference between binary fission in amoeba and leishmania?

How many double circulations are normally completed by the human heart in one minute? 

Planaria belongs to the phylum ________.

Which of the following equations correctly represents the integral form of the equation $\frac{dN}{dt}=rN$?

Question 12
Which of the following is not associated with growth of plants?

(a) Auxin
(b) Gibberellins
(c) Cytokinins
(d) Abscisic acid

Draw a well labelled diagram of:

(1) Longitudinal section of flower

(2) Binary fission in amoeba

(3) Spore formation in Mucor.

(4) Human female reproductive system

Lungs of a man are highly suitable for respiration.why?

Two different species cannot live for long, duration in the same niche or habitat. This law is _________

What is acent of sap???

Answer the following.

Give the impact of Noise pollution on the human body.

Differentiate between sexual and asexual mode of reproduction

Rearrange the following and match them with their correct descriptions:



1. FFUDNISIO

2. ALIDSYSI

3. ONTRONIUSGE TEWSSA

4. 108L



Description



(i) The process of removing nitrogenous waste products from the blood using an artificial kidney.

(ii) The initial filtrate produced daily in a healthy adult.

(iii) The waste products from the blood pass into dialyzing fluid by this process.

(iv) Dialysing fluid is devoid of this substance.

Draw the labeled diagram of the human eye and explain the image formation.

Which of the following is not an involuntary action?

(a) vomiting

(b) chewing

(c) heartbeat

(d) salivation

What will be the effect of high altitude trekking on your RBCs?

What are the divisions of pituitary gland?