CAPF (AC) 2022 (Paper-1) (Question 1-50)

Total Questions: 50

11. Which one of the following is a semiconductor device that is used to increase the power of the incoming signals by preserving the shape of the original signal?

(a) Register
(b) Transistor
(c) Flip-flop
(d) Diode

Correct Answer: (b) Transistor

Solution:A Transistor is a semi-conductor device that is used to increase the power of the incoming signals by preserving the shape of the original signal.

Semiconductors are the materials which have a conductivity between conductors (generally metals) and non-conductors or insulators (such as ceramics).

A transistor is a semiconductor device used to amplify or switch electrical signals and power.

12. Which of the following combinations correctly represents the genetic materials in prokaryotes and eukaryotes respectively?

(a) Nucleoid and Chromatin
(b) Chromatin and Nucleoid
(c) Nucleoid and Nucleolus
(d) Nucleolus and Chromatin

Correct Answer: (a) Nucleoid and Chromatin

Solution:Nucleoid and Chromatin represents the genetic materials in prokaryotes and Eukaryotes respectively. A nucleoid is a region within a prokaryotic cell that contains most or all of the genetic material.

Chromatin is a complex of DNA and proteins that forms chromosomes within the nucleus of eukaryotic cells.

13. Lysosomes are sacs of the cell filled with digestive enzymes. These digestive enzymes are synthesized by

(a) Golgi bodies
(b) smooth endoplasmic reticulum
(c) rough endoplasmic reticulum
(d) lysosome itself

Correct Answer: (c) rough endoplasmic reticulum

Solution:Lysosomes are sacs of the cell filled with digestive enzymes. These digestive enzymes are synthesized by Rough Endoplasmic Reticulum and then transported to the Hsosomes through the golgi apparatus.

Golgi body appears as a series of stacked membranes. Its main function is the packaging and secretion of proteins. It receives proteins from Endoplasmic Reticulum. It packages it into membrane-bound vesicles, which are then transported to various destinations, such as lysosomes, plasma membrane or secretion.

14. Which of the following best represents the cells of a meristem of plant?

(a) Dense cytoplasm, thin cell wall, large nuclei and absence of vacuoles
(b) Dense cytoplasm, thin cell wall, large nuclei and large vacuoles
(c) Dense cytoplasm, thin cell wall, small nuclei and absence of vacuoles
(d) Dense cytoplasm, thick cell wall, small nuclei and large vacuoles

Correct Answer: (a) Dense cytoplasm, thin cell wall, large nuclei and absence of vacuoles

Solution:Dense cytoplasm,thin cell wall,large nuclei and absence of vacuoles best represents the cells of a meristem.

The meristem is a type of tissue found in plants.

It consists of undifferentiated cells (meristematic cells) capable of cell division. Cells in the meristem can develop into all the other tissues and organs that occur in plants.

These cells continue to divide until a time when they get differentiated and then lose the ability to divide.

15. Which one of the following animals has a four-chambered heart?

(a) King cobra
(b) Turtle
(c) Chameleon
(d) Crocodile

Correct Answer: (d) Crocodile

Solution:

Crocodile has a four-chambered heart.
King Cobra have three-chambered heart.
Turtles are a curious transition--they still have three chambers, but a wall, or septum is beginning to form in the single ventricle.
Chameleons has three chambers

16. One way of incorporating desired characters into crop varieties is hybridization. In this process, there is crossing between genetically dissimilar plants. Which one of the following crossings will not refer to hybridization?

(a) Intervarietal
(b) Interspecific
(c) Intergenic
(d) Intragenic

Correct Answer: (d) Intragenic

Solution:One way incorporating desired characters into crop varieties is hybridization. In this process, there is crossing between genetically dissimilar plants. Intragenic crossing will not refer to hybridization. The cross between the plants belonging to different species but belonging to the same genus is called intragenic hybridization.

17. Depending on the requirements, plant nutrients are classified as micronutrients and macronutrients. Which one of the following is an example of a macronutrient?

(a) Manganese
(b) Copper
(c) Magnesium
(d) Chlorine

Correct Answer: (c) Magnesium

Solution:Depending on the requirements, Plant nutrients are classified as micronutrients and macronutrients. Magnesium is an example of macronutrient. "Macronutrients are the nutritive components of food that the body needs for energy and to maintain the body's structure and systems.

18. Buds produced in the notches along the leaf margin of Bryophyllum fall on soil and develop into new plants. This is an example of which one of the following types of reproduction?

(a) Vegetative propagation
(b) Budding
(c) Spore formation
(d) Regeneration

Correct Answer: (a) Vegetative propagation

Solution:Buds produced in the notches along the leaf margin of Bryophyllum fall on soil and develop into new plants. This is an example of Vegetative Propagation. Vegetative propagation is an asexual method of plant reproduction that occurs in its leaves, roots and stem. This can occur through fragmentation and regeneration of specific vegetative parts of plants.

19. Phloem tissues are mostly responsible for transport of

(a) water
(b) oxygen
(c) minerals
(d) food

Correct Answer: (d) food

Solution:Phloem tissues are mostly responsible for transport of food.

Xylem and phloem are the two vascular tissues that are responsible for the transport of substances in plants. Phloem helps the bidirectional transport of food whereas xylem helps in the unidirectional transport of water.

20. Two objects, x and y, have equal mass and are moving with speeds u and 3u respectively. Their kinetic energies k_{x} and k_{y} are related as

(a) kx = ky
(b) 2kx = ky
(c) 9kx = ky
(d) 3kx = ky

Correct Answer: (c) 9kx = ky

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