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Q:

In photosynthesis________

A) Light energy is converted into chemical energy B) Chemical energy is converted into Light energy
C) Chemical energy is converted into electrical energy D) Light energy is converted into Mechanical energy
 
Answer & Explanation Answer: A) Light energy is converted into chemical energy

Explanation:
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Filed Under: Biology

Q:

Which sanctuary has been selected as an alternative home for the Indian lion?

A) Bandipur Sanctuary (Karnataka) B) Ghana Sanctuary (Bihar)
C) Periyar Sanctuary (Kerala) D) Chandra Prabha Sanctuary (UP)
 
Answer & Explanation Answer: D) Chandra Prabha Sanctuary (UP)

Explanation:

Bandipur Sanctuary is noted for the spotted deer, and the Ghana Sanctuary is for birds.

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Filed Under: Indian Geography

Q:

Monocarpic plants are those that produce fruits ...............during the life of the plant

A) once B) thrice
C) many times D) twice
 
Answer & Explanation Answer: A) once

Explanation:

Plants are of different types. Some grow well and then produce fruits before they die. In other words they fruit only once in their life. Such plants are said to be monocarpic. Other plants produce fruits every season. These are called polycarpic plants.

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Filed Under: Biology

Q:

The disease Goitre is caused in persons who do not have in their diet sufficient

A) calcium B) sodium
C) iodine D) iron
 
Answer & Explanation Answer: C) iodine

Explanation:

Goitre is characterized by the swelling of the neck region. This is due to the enlargement of the thyroid gland which secretes hormone thyroxine. Thyroxine has iodine as an integral part of it. If there is not sufficient iodine in one's  diet, the thyroid gland swells up.

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Filed Under: Biology

Q:

In case of a heart attack, a hormone is injected as an emergency measure, Which one is it?

A) Thyroxine B) Adrenaline
C) Heparin D) Insulin
 
Answer & Explanation Answer: B) Adrenaline

Explanation:

Heparin is a hormone secreted by the liver. This is anticoagulant in its property. It prevents cloting of blood inside the heart and blood vessels. Heart attack is the result of a block in the blood vessels supplying blood to the walls of the heart.

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Filed Under: Biology

Q:

Which of the following plays an important part in photosynthesis?

A) Chloroplast B) Centrosome
C) Tonoplast D) Nematoblast
 
Answer & Explanation Answer: A) Chloroplast

Explanation:

The Chloroplast contains the wonder green pigment chlorophyll which is able to trap solar energy and use it for synthesis of food

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Filed Under: Biology

Q:

Which of the following organelle is known as the 'Power House' of the cell?

A) Golgi Bodies B) Ribosomes
C) Mitochondria D) None of these
 
Answer & Explanation Answer: C) Mitochondria

Explanation:

Mitochondria are known as 'Power House' of the cell because they produce energy in the form of ATP.

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Filed Under: Biology

Q:

Chloroform used as anaesthetic should be preserved in the dark in tightly stoppered bottles because otherwise

A) it becomes coloured B) it gets evaporated in air
C) it gets oxidised to phosgene D) it gets decomposed to chloropicrin
 
Answer & Explanation Answer: C) it gets oxidised to phosgene

Explanation:

Chloroform, CHCl3 is easily oxidised to the highly poisonous gas known as phosgene or carbonyl chloride COCl2. Hence if it is used as anaesthetic it should be kept free from sunlight and air.

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Filed Under: Chemistry
Exam Prep: AIEEE