11. Which of the following disease is non-communicable in nature?
[A] Tuberculosis
[B] Chicken-pox
[C] Cholera
[D] Cancer
Show Answer
Correct Answer: D [Cancer]
Notes:
A noncommunicable disease (NCD) is a medical condition or disease that is by definition non-infectious and non-transmissible among people. Eg. Cancer which is also called malignancy, is an abnormal growth of cells.
12. In which of the following part of the cell does the pyruvic acid is broken down into carbon dioxide, water and energy?
[A] Mitochondria
[B] Chloroplast
[C] Nucleus
[D] Cytoplasm
Show Answer
Correct Answer: A [Mitochondria]
Notes:
In Mitochondria, pyruvic acid is broken down into carbon dioxide, water and energy.
13. Which of the following cell organelles does not contain DNA?
[A] Nucleus
[B] Mitochondria
[C] Lysosomes
[D] Chloroplast
Show Answer
Correct Answer: C [Lysosomes]
Notes:
Lysosomes and vacuoles do not contain DNA. Mitochondria and chloroplasts have their own DNA.
14. What is an enzyme?
[A] Acid
[B] Base
[C] Salt
[D] Catalyst
Show Answer
Correct Answer: D [Catalyst]
Notes:
Enzyme is a protein. It acts as a catalyst in living organisms, and controls the rate of chemical reactions inside the body.
15. Which of the following is not the Class of Biomolecules?
[A] Carbohydrate
[B] Proteins
[C] Catalyst
[D] Nucleic acids and Lipids
Show Answer
Correct Answer: C [Catalyst]
Notes:
Biomolecules are organic molecules, which are involved in the metabolic process of the living organism. The four important classes of biomolecules are carbohydrates, Proteins, Nucleic acids and Lipids.
16. Which of the following is a group of plants that has the largest ovule, the largest gamete and the largest tree?
[A] Angiosperms
[B] Gymnosperms
[C] Pteridophytes
[D] Bryophytes
Show Answer
Correct Answer: B [Gymnosperms]
Notes:
A group of plants that has the largest ovule, the largest gamete and the largest tree is Gymnosperms.
17. Which of the following is a common feature of protonema of multicellular fungi, filamentous algae, and mosses?
[A] way of nutrition
[B] diplomatic life cycle
[C] multiply by fragmentation
[D] members of the plant kingdom
Show Answer
Correct Answer: C [multiply by fragmentation]
Notes:
The protonema of multicellular fungi, filamentous algae and mosses all show multiplication by fragmentation.
18. Which family is known as the ‘Potato’ family?
[A] Solanaceae
[B] Fabaceae
[C] Cruciferae
[D] Liliaceae
Show Answer
Correct Answer: A [Solanaceae]
Notes:
Solanaceae family is known as the ‘Potato’ family. The family is also known as the nightshade or potato family. The family includes Jimson weed, eggplant, mandrake, deadly nightshade or belladonna, capsicum, potato, tobacco, tomato, and petunia.
19. Carbon Dioxide from the air is trapped by which of the following parts of the plant?
[A] Petals
[B] Root hairs
[C] Stomata
[D] Mitochondria
Show Answer
Correct Answer: C [Stomata]
Notes:
Carbon dioxide in the air is trapped by stomata. It captures Carbon dioxide from the surface of the leaves and CO2 enters through the tiny pores present on leaves called stomata.
20. An anaerobic process in which energy can be released from glucose even when oxygen is not available is called__.
[A] Putrefaction
[B] Fermentation
[C] Glycolysis
[D] None of these
Show Answer
Correct Answer: B [Fermentation]
Notes:
An anaerobic process in which energy can be released from glucose even when oxygen is not available is called Fermentation.
