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Describe the functions of the following :

(a) Inguinal canal, (b) Prostate gland,

(c) Testis, (d) Ovary

(e) Oviduct.

During replication of bacterial DNA, synthesis starts from a replication origin site and:

What happens to the glucose which enters the nephron tubule along with the filtrate ?

What are plant hormones and explain them???

Why only injections of insulin are given and not tablets?

Which of the following nerves causes the adrenal medulla to release epinephrine and norepinephrine and also speed up body activities?

Statement 1: Bat's wing are seal's flipper are homologous.

Statement 2: They are different organs evolved to do the same function.

Select the incorrect option.

Which of the following statements is, true?

Which of the following statement is true for the endocrine system?

Cells on our tongue that receive stimulation of taste are known as

Question 8 (a)
Tick the correct answer:
(a) Amarbel is an example of:
(i) autotroph (ii) parasite (iii) saprotroph (iv) host

The production of starch, and not glucose, is often used as a measure of photosynthesis in leaves because:

(a) starch is the immediate product of photosynthesis.

(b) glucose formed in photosynthesis soon gets converted into starch.

(c) starch is soluble in water.

(d) sugar cannot be tested.

Far point of a person is 5m. In order that he has normal vission what kind of spectacles should he use

What is the importance of seperate association areas in the fore brain?

Which of the following are cerebral reflexes?

(i) a person pulls away his hand on touching a hot object

(ii) a person spits out immediately when a fly enters his mouth while talking

(iii) A person walking bare foot lifts his foot at once on stepping on to a nail

(iv) A person's pupil contracts at once in the presence of bright light

(a) (i) and (ii)

(b) (ii) and (iii)

(c) (iii) and (iv)

(d) (ii) and (iv)

The movement of molecules across membrane independent of other molecule is called:

Why are farmers advised to water the crop field after chemical fertilisers are used?

Which of the following is the advantage of the biconcave structure of the RBC?

Question 80
Explain the three pathways of the breakdown in living organisms.

All mammals, whale, dolphin, bat, monkey and horse have some important common characters, but they also show conspicuous differences. This is due to the phenomenon of:

What structure in your ear help to maintain a sense of equilibrium?

The temperature difference between deep and shallow water of ocean is exploited to obtain:

The largest cell in the body is:

[A]: We can distinguish sexuality of an organism by hormone system.

[B]: Sex determination can be done by chromosomes.

Lamarck gave the example of which animal to explain his theory of inheritance of acquired characters?

Ecological efficiency is

Identify the tropic movement in the picture below:

Chromosome theory of inheritance was proposed by ___.

___ helps in equalizing the pressures on either sides of the ear drum.

Inheritance caused by the location of dominant genes on the X chromosome are called

Which of the following statements are true/false?

a. The positive hydrostatic pressure is called turgor pressure.

b. Wall pressure is exerted to prevent the increase of protoplasm size.

c. Diffusion is more rapid in liquids than in gases.

d. Diffusion of water through a semi-permeable membrane is called imbibition.

e. Osmosis is the movement of substances which occurs along a diffusion gradient.

A round seeded plant (R) is dominant over the wrinkled seeded plant (r). What parental genotypes will produce 50% of offspring with RR genotypes and 50 % of offspring with Rr genotypes?

Why do fishes prefer deep waters during day light ?

How does breathing and other forms of muscular activity contribute to venous blood flow.

Among lion, tiger and omestic cat, all the three have the same number of 38 chromosomes, yet they have different appearances. How do you account for such differences?

Where are the following located? Briefly mention the function of each :
(a) Oval window

(b) Cochlea

(c) Semicircular canals

(d) Utriculus

The forest Act of 1878 divided forests into:

Question 1
How do Mendel’s experiments show that traits may be dominant or recessive?

The organ of Corti, in human beings, is found in:

The possible reason for the very long durability of spores and survival in extreme conditions is _____________.

The spherical structure that contains the genetic material in a cell is

A single nucleoside consists of

What name is given to the sequence of gradual changes over millions of years in which new species are produced?

(a) Define nutrition. Why is nutrition necessary for an organism?
(b) What are the different modes of nutrition? Explain with one example of each mode of nutrition.
(c) Name the mode of nutrition in (i) roundworm, and (ii) Plasmodium.