Tiêu đề 07. REPRODUCTION in ORGANISMS.pdf ✅

07. REPRODUCTION in ORGANISMS WORKSHEET 1 (1.) Assertion : Urethra in human male acts as urinogenital canal. Reason : Urethra carries only urine while sperms are carried by vasa deferentia only. (1) If both Assertion and Reason are correct and Reason is the correct explanation of Assertion. (2) If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion. (3) If Assertion is correct but Reason is incorrect. (4) If Assertion is incorrect but Reason is correct. (2.) In budding (1) Outgrowth develops earlier than nuclear division (2) Nucleus divides earlier than development of outgrowth (3) Both occur simultaneously (4) There is no fixed sequence (3.) Male hormone is :- (1) Corpus luteum (2) Testosterone (3) Progesterone (4) Gonadotropin (4.) In yeast budding occurs in (1) Unfavourable conditions (2) Favourable conditions (3) During perennation (4) Overgrown individuals (5.) Oogenesis is a process of formation of :- (1) Sperms (2) Ova (3) Sperms and ova (4) None of these (6.) The stem being young is easily bent without any breakage and is preferred for _______ process. (1) breeding (2) grafting (3) cutting (4) layering (7.) The correct sequence of reproductive stages seen in flowering plants is (1) gametes, zygote, embryo, seedling (2) zygote, gametes, embryo, seedling (3) seedling, embryo, zygote, gametes (4) gametes, embryo, zygote, seedling (8.) Which of the following can reproduce through regeneration ? (1) Hydra (2) Planaria (3) Wall lizard (4) Both (A) and (B) (9.) Double fertilization is a characteristic of (1) angiosperms (2) algae (3) gymnosperms (4) bryophytes (10.) As compared to human egg the spermatozoa has less :- (1) Chromosomes (2) Centrosomes (3) Cytoplasm (4) Mobility (11.) Binary fission occurs in : (1) Plasmodium (2) Hydra (3) Pomegranate (4) Amoeba (12.) What is micropropagation? (1) Germination of seed with cotyledons above the soil. (2) A technique to obtain new plants by cultivating the cells or tissues in culture medium. (3) The mature stage of endosperm. (4) To manufacture hormones. (13.) Which part of the flower forms the fruit ? (1) Whole flower (2) Only stamens and carpel (3) Only ovary (4) Only carpel (14.) The length of pollen tube depends on the distance between (1) pollen grain and upper surface of stigma. (2) pollen grain on upper surface of stigma and ovule.