11. Which of the following is a characteristic of the plant kingdom?
[A] contains cell walls and cellulose.
[B] are microscopic
[C] heterotrophic and multicellular organisms
[D] generally found in aquatic habitats
Show Answer
Correct Answer: A [contains cell walls and cellulose.]
Notes:
Plants that have a cell wall and are made of cellulose belong to the Plantae kingdom.
12. In which of the following cells are chloroplasts present?
[A] plants
[B] algae
[C] Both 1 & 2
[D] Neither 1 nor 2
Show Answer
Correct Answer: C [Both 1 & 2]
Notes:
Chloroplasts are present in the cells of all green tissues of plants and algae. Chloroplasts are also found in photosynthetic tissues that do not appear green.
13. What is the most popular indirect method of counting virus particles?
[A] hemagglutination assay
[B] plaque-assay
[C] counting plaque-forming units
[D] colony counting
Show Answer
Correct Answer: A [hemagglutination assay]
Notes:
The hemagglutination assay (HA) is a tool used to detect hemagglutinating agents in cell culture isolates or amnioallantoic fluids.
14. Into how many subgroups is the plant kingdom classified?
[A] Three
[B] Four
[C] Five
[D] Six
Show Answer
Correct Answer: C [Five]
Notes:
The plant kingdom has been classified into five subgroups: Thallophyta, Bryophyta, Pteridophyta, Gymnosperms, Angiosperms
15. When did gymnosperms originate?
[A] Palaeozoic
[B] PreCambrian
[C] Cenozoic
[D] Mesozoic
Show Answer
Correct Answer: A [Palaeozoic]
Notes:
Gymnosperms were the first seed plants to evolve. The earliest seed-like bodies are found in the rocks of the Upper Devonian chain. They appeared in the Paleozoic period and were the dominant plants during the Mesozoic.
16. A compound leaf is a leaf made up of ___?
[A] two or more leaflets
[B] one leaflets
[C] No leaflets
[D] None of these
Show Answer
Correct Answer: A [two or more leaflets]
Notes:
A compound leaf is made up of two or more leaflets. In a compound leaf, the central vein of the leaf splits into individual leaves and is attached to a single stalk. For example, peas, palm leaves.
17. Euphorbiaceae, Apocynaceae, Composites come under which tissue?
[A] Laticiferous
[B] Glandular
[C] Sclerenchyma
[D] Collenchyma
Show Answer
Correct Answer: A [Laticiferous]
Notes:
Euphorbiaceae, Apocynaceae, Composites come under Laticiferous tissues.
18. Which of the following is not necessary during photosynthesis.
[A] Sunlight
[B] Oxygen
[C] Carbon dioxide
[D] Water
Show Answer
Correct Answer: B [Oxygen]
Notes:
Photosynthesis is a process that is performed by green plants to make their food. In this process, the leaves of the green plant absorb CO2 from the atmosphere and make food in the presence of sunlight and water.
19. Anaerobic respiration is found in which of the following?
[A] mitochondria
[B] cytoplasm
[C] Both 1 and 2
[D] cell wall
Show Answer
Correct Answer: B [cytoplasm]
Notes:
Anaerobic respiration can be found only in the cytoplasm while Aerobic Respiration can be found in the cytoplasm and the mitochondria.
20. In aerobic respiration, glucose is broken down into what?
[A] carbon dioxide
[B] water
[C] ethyl alcohol
[D] Only 1 and 2
Show Answer
Correct Answer: D [Only 1 and 2]
Notes:
Glucose breaks down into carbon dioxide and water.
Glucose + Oxygen → Carbon dioxide + Water + Energy
