Sample question paper

Select the group in which all organisms have the same mode of nutrition.

1. ACuscuta, yeast, legumes, leeches and tapeworm
2. BCactus, ticks, lice, leeches and cow
3. CCuscuta, ticks, lice, leeches and tapeworm
4. DCactus, grass, lice, lion and tapeworm

Which of the following options indicates the products formed after breakdown of the glucose in our muscle cells when there is lack of oxygen?

1. AEthanol + carbon dioxide + Energy
2. BLactic acid + Energy
3. CLactic acid + carbon monoxide + Energy
4. DCarbon dioxide + Water + Energy

Which of the following is a correct combination of function and part of the brain?

1. APosture and balance: Cerebrum
2. BSalivation: Medulla in midbrain
3. CHunger: Pons in hindbrain
4. DBlood pressure: Medulla in hindbrain

The blood glucose level in a patient was very high. It may be due to inadequate secretion of:

1. Agrowth hormone from pituitary gland
2. Boestrogen from ovary
3. Cinsulin from pituitary gland
4. Dinsulin from pancreas

In a cross between black furred rabbit (B) and white furred rabbit (b), all offspring were found to have black fur. What can be inferred about the genetic makeup of the parent rabbits?

1. ABB X bb
2. BBb X Bb
3. CBb X bb
4. Dbb X bb

Which are the correct statements related to ozone?

1. (i)
   Ozone layer helps in increasing the UV radiations reaching earth.
2. (ii)
   Ozone is a deadly poison.
3. (iii)
   Ozone layer shields the earth from UV radiations.
4. (iv)
   Ozone layer prevents UV rays which cause skin cancer.
5. (v)
   Ozone is formed with the help of Chloroflurocarbons.

Which of the following human activities has resulted in an increase of non-biodegradable substances?

1. AOrganic farming
2. BIncrease in tree plantation
3. CUse of plastic as packaging material
4. DComposting of kitchen waste

Assertion (A): Tallness of a pea plant is controlled by an enzyme. Reason (R): The gene for that enzyme makes proteins which help the plant to be tall.

1. ABoth A and R are true, and R is the correct explanation of A.
2. BBoth A and R are true, and R is not the correct explanation of A.
3. CA is true but R is false.
4. DA is false but R is true.