(a) Draw a labelled diagram of the human heart. (b) What is the use of platelets in the maintenance of human beings? (c) Which respiratory pigment is found in red blood corpuscles found in human blood?
1 AnswerA common cloacal aperture is found in (A) Rana (B) Nereis (C) Rabbit (D) Pheretima
1 Answer70S type of ribosomes are found in A. Prokaryotic cells B. Prokaryotic cells and chloroplast C. Mitochondria D. Nucleus mitochondria
1 AnswerAbout how much saliva does a person produce in an entire day? A. 100 ml B. 250 ml C. 500 ml D. 1500 ml
1 AnswerAfter ovulation in a female mammal, the structure which is formed by the ruptured follicle is A. Corpus Luteum B. Graafian follicle C. Placenta D. Epididymis
1 AnswerA condition in which the body’s internal environment remains relatively constant within limits is (a) Hematoma (b) Haemopoiesis (c) Homeostasis (d) Hemostasis
1 AnswerA glass dome covering an area of 3.5 acres with 4000 representatives of most ecosystems and eight human beings in order to prepare a prototype of a space colony is A. Glass house B. Phytotron C. Biosphere 1 D. Biosphere 2
1 AnswerAgar-agar commonly used in bacterial cultures and medication is obtained from A. Sargassum B. Gelidium C. Ulothrix D. Ulva
1 AnswerA component of the cytoskeleton is A. Microtubule B. Bone C. Chitin D. Cartilage
1 AnswerAbscisic acid causes A. Faster leaf fall B. Dormancy of buds and seeds C. Retardation of growth D. All of the above
1 Answer
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