11. Match List I and List II and select the correct answer by using the codes given below the lists:
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List I
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List II
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I. Malaria
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(A) Bone marrow
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II. Filaria
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(B) Brain
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III. Encephalitis
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(C) Muscle
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IV. Leukaemia
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(D) Lymph node
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(E) Blood cells
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Codes:
[A] I-E, II-C, III-B, IV-A
[B] I-E, II-D, III-B, IV-A
[C] I-D, II-C, III-E, IV-A
[D] I-E, II-D, III-A, IV-B
Show Answer
Correct Answer: B [I-E, II-D, III-B, IV-A]
Notes:
• Invasion by the malaria parasite, Plasmodium falciparum, brings about extensive changes in the host red cells. Numerous proteins secreted by the internalized parasite and interacting with red cell membrane proteins are responsible for the changes occurring to the host cell.
• Lymphatic filariasis is caused by the worms Wuchereria bancrofti, Brugia malayi, and Brugia timori. These worms occupy the lymphatic system, including the lymph nodes; in chronic cases these worms lead to the syndrome of elephantiasis. These worms occupy the subcutaneous layer of the skin, in the fat layer.
• Encephalitis is an acute inflammation of the brain usually resulting from either a viral infection or due to the body’s own immune system mistakenly attacking brain tissue.
• Leukaemia is a cancer that starts in blood-forming tissue, usually the bone marrow. It leads to the over-production of abnormal white blood cells, the part of the immune system which defends the body against infection.
12. Branch of science dealing with the medicinal plants is known as__?
[A] Pharmacognosy
[B] Pharmacology
[C] Phenology
[D] None of these
Show Answer
Correct Answer: A [Pharmacognosy]
Notes:
Pharmacognosy is the study of drugs or raw drugs produced from natural sources such as plants, microbes, and animals. It involves the analysis of their biological, chemical, biochemical and physical properties.
13. Hugo de Vries is related to which of the following theory of biology?
[A] aquatic ape theory
[B] modern anatomy
[C] Mutation Theory
[D] theory of evolution
Show Answer
Correct Answer: C [Mutation Theory]
Notes:
Hugo de Vries is a Dutch botanist and geneticist who pioneered the experimental study of biological evolution. His rediscovery of Gregor Mendel’s principles of heredity and his theory of biological mutation in 1900.
14. Chromosome Theory of Inheritance was proposed by __?
[A] Pier Antonio Micheli
[B] Louis Pasteur
[C] Stephen Hales
[D] Thomas Hunt Morgan
Show Answer
Correct Answer: D [Thomas Hunt Morgan]
Notes:
The chromosomal theory of inheritance, or the idea that genes are located on chromosomes, was proposed based on the experiments of Thomas Hunt Morgan.
15. In which of the following hemocaelic body cavity is found?
[A] Cockroach
[B] Lizard
[C] Mosquito
[D] Honeybee
Show Answer
Correct Answer: A [Cockroach]
Notes:
Hemocoelic body cavity is a characteristic of Cockroach.
16. How many amino acids are needed to make proteins?
[A] 19
[B] 20
[C] 21
[D] 22
Show Answer
Correct Answer: B [20]
Notes:
Amino acids combine to form protein. It requires 20 amino acids to make a protein in both plants and animals. Amino acids and protein are considered as the main body building blocks.
17. Which of the following do you consider the best evidence to show that the two species of algae are closely related.
[A] They both respire and release CO2
[B] They both are found in the same habitat
[C] They both reproduce asexually
[D] They both have same type of pigments
Show Answer
Correct Answer: D [They both have same type of pigments]
Notes:
The best evidence to show that the two species of algae are closely related is – They both have same type of pigments.
18. Fungal disease – Black rust of wheat is caused by?
[A] Melampsora lini
[B] Claviceps purpurea
[C] Puccinia graminis tritici
[D] Albugo candida
Show Answer
Correct Answer: C [Puccinia graminis tritici
]
Notes:
Leaf rust caused by Puccinia triticina is the most common rust disease of wheat. The disease occurs where wheat, barley, and other cereal crops are grown.
19. What is the most important function of the leaves?
[A] Photosynthesis
[B] Transpiration
[C] Guttation
[D] Storage
Show Answer
Correct Answer: A [Photosynthesis]
Notes:
Photosynthesis is the major function performed by leaves, through which carbon dioxide, water and sunlight are converted into glucose and energy.
20. Which plant tissue consists of phloem and xylem?
[A] Complex Permanent Tissue
[B] Simple Permanent Tissue
[C] Parenchyma Tissue
[D] Collenchyma Tissue
Show Answer
Correct Answer: A [Complex Permanent Tissue]
Notes:
Complex Permanent Tissue tissues include phloem and xylem. Xylem helps in the transport of water and soluble components.
Phloem helps in the transportation of food particles.