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How do you account for the following differences?
(a) The left ventricle has thicker walls than the right ventricle.
(b) The walls of the right ventricle are thicker than those of the right auricle.

The plant in the image is the pitcher plant. Which of the following statement(s) regarding the plant is/are correct?

Which of the following statements are false?
I Testosterone belongs to a class of male hormones called androgens.
II Women also produce testosterone, but at lower levels than men.
III Testosterone is a steroid.
IV The brain's hypothalamus and pituitary glands control testosterone production.

What is the movement of plant due to touch is called?

Punctuate the following passage:

a new age cycle rickshaw that is light on both the pockets and the calf muscles of rickshaw pullers mobile games designed to battle life threatening diseases like hiv/aids and tb and a low cost computer that enables visually challenged students to read the textbooks these are all new inventions these are not innovations designed by phunjshuk wanngduaka ranchhoddas shamaldas of chanchad of 3 idiots fame much before aamir khan's rancho made innovation a household word these simple but powerful ideas were being quietly conceptualised and put to practice by enterprising Indians in various corners of the country.

Identify the correct statement with regard to G1 phase (Gap I) of the interphase?

Question 8

A zygote which has an X-chromosome inherited from the father will develop into a



(a) boy

(b) girl

(c) X- chromosome does not determine the sex of a child

(d) either boy or girl

Diabetes insipidus and diabetes mellitus caused by deficiency of .................. and ...................... respectively.

How does the external projection of the ear help a mammal?

Cerebral hemispheres are centres of

Which of the following is not an excretory organ?

State the phenotypic ratio of a dihybrid cross:

Enter a numeric value

(a) Explain the relationship between sanitation and disease.

(b) Name two chemicals used to disinfect the water.

Question 4

A study found that children with light-coloured eyes are likely to have parents with light-coloured eyes. On this basis, can we say anything about whether the light eye colour trait is dominant or recessive? Why or why not?

The synaptonemal complex will formed in which stage
of meiosis I ?

Term used to describe the characteristic that is suppressed in the presence of another one.

The transgenic potatoes will act against bacteria

How do personal and community issues affect your health? [5 MARKS]

Question 36

We eat food composed of all the nutrients like carbohydrates, proteins, fats, vitamins, minerals and water. After digestion, these are absorbed in the form of glucose, amino acids, fatty acids, glycerol etc. What mechanisms are involved in the absorption of digested food and water?

In humans , if gene B gives brown eyes and gene b gives blue eyes. What will be the colour of eyes of the persons having the following combination of genes ?

(a) Bb (b) bb (c) BB

Deficiency of testosterone causes ___ and deficiency of oestrogen causes ____.

Multiple fission involves …………………………. and …………………………….. around each daughter nuclei.

Process by which water and dissolved vitamins and minerals are absorbed into the blood stream in the ileum.

Which among the following sequences was proposed by Darwin and Wallace for organic evolution?

Name the largest artery in human body.

The diffusion of potassium ions out of a neuron after depolarisation causes _____.

Why is the closing of a dandelion flower at dusk (when it gets dark), not a tropism?

Question 11

Your parents are going to buy a house. They have been offered one on the roadside and another three lanes away from the roadside. Which house would you suggest your parents should buy? Explain.

Explain how, it would benefit deep sea divers if humans also had gills.

The annual rate of price inflation in India is measured by the