1. What is the primary criterion used for the classification of living organisms into different kingdoms?
a. Reproductive mode
b. Presence of cell walls
c. Mode of nutrition
d. Genetic similarities
Answer: c. Mode of nutrition
2. Which taxonomic category is broader than class but narrower than phylum in the hierarchy of biological classification?
a. Order
b. Family
c. Genus
d. Division
Answer: a. Order
3. In the binomial nomenclature system, which part of the scientific name indicates the species to which an organism belongs?
a. Genus
b. Order
c. Family
d. Phylum
Answer: a. Genus
4. What is the basis of classification in the Five-Kingdom System proposed by R.H. Whittaker?
a. Cellular structure
b. Mode of reproduction
c. Evolutionary relationships
d. Mode of nutrition
Answer: d. Mode of nutrition
5. Which scientist is known as the “Father of Taxonomy” for his system of classification based on morphological characteristics?
a. Carl Linnaeus
b. Charles Darwin
c. Gregor Mendel
d. Aristotle
Answer: a. Carl Linnaeus
6. In the three-domain system, which domain includes organisms that are prokaryotic and often extremophiles?
a. Bacteria
b. Archaea
c. Eukarya
d. Protista
Answer: b. Archaea
7. What is the common feature shared by all members of the plant kingdom in terms of mode of nutrition?
a. Heterotrophic
b. Autotrophic
c. Saprophytic
d. Parasitic
Answer: b. Autotrophic
8. Which of the following is a criterion used for the classification of animals into different phyla?
a. Presence of chlorophyll
b. Presence of exoskeleton
c. Presence of cellulose cell walls
d. Presence of flagella
Answer: b. Presence of exoskeleton
9. What is the purpose of a dichotomous key in biological classification?
a. To determine genetic relationships
b. To identify species based on characteristics
c. To measure evolutionary divergence
d. To classify organisms based on habitat
Answer: b. To identify species based on characteristics
10. Which taxonomic rank is immediately below class in the hierarchy of biological classification?
a. Order
b. Family
c. Genus
d. Phylum
Answer: a. Order
11. Which domain of life includes eukaryotic organisms that are not plants, animals, or fungi?
a. Bacteria
b. Archaea
c. Eukarya
d. Protista
Answer: c. Eukarya
12. What is the main criterion used for the classification of viruses?
a. Genetic material
b. Mode of reproduction
c. Cellular structure
d. Presence of cell walls
Answer: a. Genetic material
13. In the scientific name Homo sapiens, what does “sapiens” represent?
a. Genus
b. Species
c. Family
d. Order
Answer: b. Species
14. Which of the following is a characteristic used for the classification of plants into different divisions?
a. Presence of seeds
b. Presence of flowers
c. Vascular tissue arrangement
d. Presence of chlorophyll
Answer: c. Vascular tissue arrangement
15. What is the primary criterion used for the classification of bacteria into different phyla?
a. Shape of cells
b. Mode of reproduction
c. Presence of flagella
d. Mode of nutrition
Answer: a. Shape of cells
16. In the hierarchy of biological classification, which category is broader than family but narrower than order?
a. Phylum
b. Genus
c. Class
d. Division
Answer: c. Class
17. Which of the following is a characteristic used for the classification of fungi into different phyla?
a. Mode of reproduction
b. Presence of hyphae
c. Presence of chlorophyll
d. Presence of spores
Answer: b. Presence of hyphae
18. What is the purpose of a cladogram in evolutionary biology?
a. To determine genetic relationships
b. To classify organisms based on habitat
c. To measure evolutionary divergence
d. To represent the branching patterns of evolutionary relationships
Answer: d. To represent the branching patterns of evolutionary relationships
19. Which of the following is a characteristic used for the classification of animals into different classes?
a. Presence of feathers
b. Presence of scales
c. Presence of fur
d. Presence of exoskeleton
Answer: b. Presence of scales
20. In the classification of organisms, which term is used for a group of related orders?
a. Kingdom
b. Phylum
c. Class
d. Superorder
Answer: d. Superorder
21. Bacteria multiply by ___________.
1. Asexual reproduction
2. Sexual reproduction
3. Spores
4. Sexual and asexual reproduction
Answer: Option(4) is correct.
22. Dunaliella salina falls within the heading of ________, specifically:
1. Halophiles
2. Thermophiles
3. Methanogens
4. Hydrophiles
Answer: Option(1) is correct.
23. Because of the ________, archaebacteria can endure harsh environments.
1. They are the oldest living organisms on Earth
2. They have complicated metabolic processes in their bodies
3. Rigid cell walls
4. Double membrane nuclei
Answer: Option(3) is correct.
24. Methanogens are found in the ______ of a cow:
1. Mouth
2. Guts
3. A cow’s respiratory system
4. A cow’s ribs
Answer: Option(2) is correct.
25. Which of the following statements regarding cyanobacteria is false?
1. Because the term “cyano” implies “greenish-blue,” cyanobacteria is sometimes known as “blue-green algae.”
2. Cyanobacteria are chemosynthetic autotrophs.
3. They produce chlorophyll, which gives them their color.
4. They also contribute to the atmosphere’s oxygen enrichment.
Answer: Option(3) is correct.
26. Which of the following sources of energy are used by chemosynthetic autotrophs to create food:
1. Light energy
2. Chemical energy
3. Bioenergy
4. Thermal Energy
Answer: Option(2) is correct.
27. What statements regarding Mycoplasma are false?
1. Its cell wall is stiff
2. It uses parasitic feeding behavior.
3. It can be found in blood smears and the urogenital tract
4. The tiniest living organism is mycoplasma.
Answer: Option(1) is correct.
28. Pseudomonas uses __________.
1. The parasitic form of nutrition;
2. The heterotrophic mode of nutrition;
3. The saprophytic method of nutrition;
4. The autotrophic mode of nutrition
Answer: Option(2) is correct.
29. Which of the following statements concerning lacto bacilli is false?
1. They are rod-shaped bacteria,
2. They are parasites
3. They are also helpful in wine production industries.
4. They cause curd to form when milk is exposed to them.
Answer: Option(2) is correct.
30. Why is food preserved in a refrigerator safeguarded against fungi?
1. Fungi cannot flourish in warm environments.
2. The refrigerator creates a dry, cool environment that prevents the growth of fungus.
3. The poisonous CFC gas in the refrigerator prevents the growth of fungus.
4. The gadget uses electricity, which prevents the growth of fungus.
Answer: Option(2) is correct.
31. The process of Budding is ________
1. Sexual reproduction
2. An asexual mechanism of reproduction in which a parent organism’s outgrowth divides to create a daughter organism
3. An asexual reproduction method in which the parent organism splits into pieces and then grows into a new organism.
4. An asexual way of reproduction in which the cytoplasm and nuclei divide into two equal halves to create two daughter nuclei
Answer: Option(2) is correct.
32. Coenocytic refers to __________.
1. Sharing of a common cytoplasmic region and
2. Elimination of the plasma membrane
3. Sharing of a common hyphal wall;
4. Sharing of a common nucleus
Answer: Option(1) is correct.
33. Which of the following groups of protists resemble animals?
1. Chrysophytes and
2. Protozoa
3. Dinoflagellates
4. Slime molds
Answer: Option(2) is correct.
34. Because _____, diatomaceous earth may be used to control pests.
1. It is porous
2. It contains silica, which when consumed by bugs renders them lethal.
3. It strips the lipids from the cuticle, the bugs’ exterior waxy covering, causing the pests to dry up and die.
4. It serves as anesthesia when administered in little doses, but pests perish when big doses are administered.
Answer: Option(3) is correct.
35. Diatoms belong to the following classifications: _________
1. Chrysophytes
2. Protozoans
3. Dianoflagelletes
4. Euglenoids
Answer: Option(1) is correct.