Which of the following body part of the plant is haploid?

• Gamete

• Flower

• Ovary

• Anther

Which of the following bacteria is beneficial for mankind?

• Streptococcus

• Salmonella

• Penicillium

• All of these

Gastric juice contains

• Pepsin, Lipase, Renin

• Trypsin, Lipase, Renin

• Trypsin, Pepsin, Renin

• Pepsin, Trypsin, Lipase

Which of the following is a micronutrient for plants?

• Sulphur

• Manganese

• Magnesium

• Phosphorus

Which cells synthesize and secrete testicular hormones (androgens) in a man?

• Sertoli cells

• Mucous cells

• Spermatogonia

• Leydig cells

The approximate temperature of the body of a healthy person is

• 37° C

• 37 K

• 37° F

• 37° R

Select from the following a group of diseases caused by bacteria

• Malaria, Polio and Typhoid

• Chickenpox, Meningitis and Tuberculosis

• Tuberculosis, Pneumonia and Typhoid

• Chickenpox, Influenza and Polio

Consider the following Column A and Column B in which the names of micro-organisms are given in Column A and the groups to which they belong are given in Column B

Column A

1. Aspergillus
2. Lactobacillus
3. Paramecium
4. Spirogyra

Column B

1. Algae
2. Bacteria
3. Fungi
4. Protozoa
5. Virus

The correct match of the items of Column A with that of Column B is

• A: III

  B: II

  C: IV

  D: I

• A: V

  B: III

  C: II

  D: IV

• A: III

  B: II

  C: IV

  D: V

• A: II

  B: III

  C: IV

  D: I

Which of the following statements are true about veins in the human circulatory system?

1. All veins carry carbon dioxide-rich blood.

2. Veins have thin walls.

3. Veins carry blood from different organs to the heart.

• B and C

• A and C

• All of these

• A and B

Cellulose-rich food substances (i.e., roughages) are considered an essential component of a balanced diet of human beings. Which one of the following is the correct statement about cellulose?

• Human beings do not have cellulose-digesting enzymes

• Cellulose is a type of carbohydrate, which gets absorbed in the human blood and gives energy

• Cellulose breaks down easily into smaller components which are egested as roughages

• The cellulose-digesting bacteria present in human beings convert cellulose into fibres