Welcome to your CUET - Biology 1. A life cycle of an individual is differentiated into different phases. For example, in animals, juvenile phase is followed by : A) reproductive phase B) Growth phase phase C) pre-reproductive phase D) vegetative phase. None 2. External fertilization occurs in majority of A) fungi B) liverworts C) algae D) mosses None 3. An algae that is multicellular and filamentous consists of asexual life cycle during which, the meiotic division occurs after the formation of zygote. It has filament that consists of: A) Vegetative cells (n) and diploid gametangia (2n) B) Vegetative cells (2n) and haploid gametangia (n) C) Both diploid vegetative cells and gametangia D) haploid vegetative cells and haploid gametangia None 4. An organism can reproduce by sexual and asexual methods. The type of reproduction adopted by an organism to reproduce depends upon : A) the habitat and morphological features of an organism B) morphology and anatomy of an organism C) morphology and physiology of an organism D) the organism’s habitat, physiology, and genetic makeup None 5. Formation of a fruit without the process of fertilization is known as : A) Parthenocarpy B) Apomixis C) Parthenogenesis D) Vegetative propagation None 6. Non-primate mammals like cows and dogs female shows : A) Menstrual cycle B) External fertilization C) Oestrous D) Both a and b None 7. The process that leads to formation of zygote in angiosperms is : A) Pre-fertilization B) Syngamy C) Fusion D) Post-fertilization None 8. In oviparous and viviparous animals, whose offsprings are under more threat immediately after birth? A) Oviparous B) Viviparous C) Both oviparous and viviparous as global warming increasing D) Incomplete information None 9. Find the correct statement that corresponds to the feature that is present in Hydra A) formation of asexual gemmules under unfavorable conditions B) formation of unisexual buds C) It produces multicellular buds D) It is a prokaryotic, multicellular organism None 10. Find the statement that correctly corresponds to the Cucurbita plants ? A) It is monoecious producing both staminate and pistillate flowers in the same plant. B) It is monoecious producing staminate and pistillate flowers in two different plants. C) It is a dioecious plants with staminate and pistillate flowers in the same plant D) It is a dioecious plant producing staminate and pistillate flowers in two different plants. None 11. The female gametophyte formed after the process of fertilization is also known as : A) Embryo B) Embryo sac C) Zygote D) Mature seed None 12. The process of pollination in which the pollens from a male flower is transferred to the stigma of another flower on a same plant is known as A) self fertilization B) geitonogamy C) chasmogamy D) cleistogamy None 13. The process of autogamy pollination can occur in a chasmogamous flower if : A) pollen matures before maturity of the ovule. B) ovules mature before maturity of pollen. C) the maturation of pollen and ovule occurs simultaneously. D) both anther and stigma are of equal lengths. None 14. The structures that are visible within embryo sac after triple fusion includes are : A) Synergid (n) , zygote (2n) and primary endosperm nucleus (3n). B) Synergid (n), antipodal (2n) and polar nuclei (2n). C) Antipodal (2n), synergid (2n) and primary endosperm nucleus(2n). D) Synergid (2n), polar nuclei (3n) and zygote (2n). None 15. An ovule is attached to the ovary with the help of a structure known as: A) Fundle B) Funicle C) Peduncle D) Lobe None 16. An endosperm is the nutritional substance substance, formed to be utilized by the developing embryo. The outermost layer of the endosperm in a maize grain is known as : A) Aleurone layer B) Tunic C) Testa D) Pericarp None 17. In a monocotyledon, a developing root is protected by : A) Root cap B) Coleoptile C) Radicle D) Coleorhiza None 18. The two conditions, that are essential for the storage of seeds includes : A) Dehydration and cold temperatures B) Dehydration and Dormancy C) Dehydration and vacuum conditions D) Dehydration and tight containers None 19. A type of pollination that harbors the following features like :(i) it ensures genetic recombination. (ii) between different flowers of the different plants. (iii) it ensures genetic recombination. A) Autogamy B) Geitonogamy C) Xenogamy D) Cleistogamous None 20. A primary spermatocyte and a primary oocyte results in formation of how many mature sperms and ovum respectively? A) One, One B) 2, 1 C) 4, 1 D) 4, 2 None 21. The process that does not involve any cell division includes : A) gametogenesis B) oogenesis C) embryogenesis D) spermiogenesis None 22. A blastocyst is formed during post-fertilization event. The outermost layer that covered the blastocyst is a : A) ectoderm in origin B) Epidermis C) mesodermal on origin D) trophoblast None 23. The process of Spermiation refers to the release of sperms from : A) seminiferous tubules B) rete testis C) epididymis D) genital orifice None 24. Semen consists of sperms and Seminal plasma (a liquid part). The seminal plasma is formed by : A) seminal vesicle and Cowper's gland. B) Cowper's gland and prostate. C) prostate and seminal vesicle. D) seminal vesicles, prostate and Cowper's gland. None 25. In the period of nine month pregnancy, the appearance of first movement and appearance of hair on the head of the fetus are observed during : A) Third month of pregnancy B) Fifth month of pregnancy C) Seventh month of pregnancy D) Second month of pregnancy None 26. Outermost layer of the uterine wall is known as : A) Perimetrium B) Endometrium C) Ectoderm D) A and C both None 27. The placenta (connection between mother and the child) is connected to the embryo through ? A) Fallopian tube B) Umbilical cord C) 2 renal arteries D) 1 vein None 28. Match Column I with Column II. A) A – 4, B – 2, C – 1, D – 3 B) A – 4, B – 2, C – 2, D – 1 C) A – 3, B – 4, C – 1, D – 2 D) A – 4, B – 3, C – 1, D – 2 None 29. To prevent fertilization, which among the following is commonly considered as a withdrawal method? A) Lactational amenorrhoea B) A coitus interruptus C) Periodic abstinence D) Condoms None 30. Emergency contraceptives like pills are effective if used within : A) 72 hours of sex B) 72 hours after ovulation C) 72 hours after menstruation D) 72 hours of implantation None 31. According to ARTs, the process of transfer of sperm directly into the ovum under laboratory conditions is known as : A) GIFT B) Artificial insemination C) ICSI D) ET None 32. ZIFT is transfer of A) zygote into the fallopian tube B) a mixture of sperms and ova into the fallopian tube. C) 1 sperm into zygote under petri dish D) zygote into the endometrium None 33. The cases of Sexually transmitted diseases are common among the people of age group of : A) 18-21 years B) 15-24 years C) 22-32 years D) 12-18 years None 34. The contraceptive methods that acts by avoiding the chances of meeting between sperm and ovum are known as : A) Barrier method B) Condoms C) Copper T D) Both a and b None 35. A fertile period refers to the following days during the menstrual cycle : A) 14 -15 B) 11- 14 C) 10-17 D) 10-12 None 36. Match the items of Column I with those of Column II. A) A – 2, B – 3, C – 2, D – 1 B) A – 4, B – 3, C – 1, D – 2 C) A – 1, B – 3, C – 4, D – 2 D) A – 2, B – 3, C – 1, D – 4 None 37. In a dihybrid cross, AABb x aaBb, the genotypes obtained include, AaBB : AaBb : Aabb. The ratio of the following offspring would be:- A) 3:2:1 B) 1:2:1 C) 1:2:2 D) 2:1:2 None 38. Observe the pedigree chart given below. A) It is a sex-linked recessive trait. B) It is an autosomal recessive trait. C) It is an autosomal dominant trait. D) It is a sex-linked dominant trait. None 39. The phenomenon of single gene expressing more than one character is known as : A) Codominance B) mosaicism C) pleiotropy D) polygenic None 40. None 41. If a woman suffering from hemophilia marries a normal man (without haemophilia), A) 75% female will be normal while 25% male will be diseased B) all their sons will be haemophilic. C) all their daughters will be haemophilic. D) 75% male will be normal while 25% female will be diseased None 42. The three siblings within a family have blood groups O, AB and A. The genotype of the parents must be _____ and ____ . A) IAi, IBi B) IAi, IAi C) IABi, IBi D) ii, IBi None 43. The scientist who observed the first X-chromosome in a few insects was : A) Darwin B) Morgan C) Mendel D) Henking None 44. The diseases like Cystic fibrosis and hemophilia are examples of disorders. A) Non -Mendelian disorders B) Mendalian disorders C) Sex- linked abnormality D) None of the above None 45. Match the sex-chromosome complements in Column I with the male/female organisms in Column II. A) A – 3, B – 4, C – 1, D – 5 B) A – 1, B – 4, C – 3, D – 5 C) A – 5, B – 4, C – 1, D – 2 D) A – 3, B – 1, C – 4, D – 5 None 46. In prokaryotic organisms, the Operon model for regulation of the process of transcription was proposed by : A) Griffith B) Jacob and Monod C) Watson and Crick D) Martha and Chase None 47. In the lac operon of E.coli, a gene 'i' codes for : A) inducer B) repressor C) initiator D) lactase enzyme None 48. The DNA double helix structure consists of Purines and Pyrimidines that bond with each other through hydrogen bonding. The fixed bonding between them is responsible for the : A) the antiparallel nature of DNA double strands B) the semiconservative nature of DNA C) uniform width throughout DNA D) uniform length in all DNA None 49. During DNA replication, the synthesis of one strand is discontinuous because : A) DNA molecule being synthesized is very long and only one strand needs to be synthesized continuously. B) DNA dependent DNA polymerase catalyses polymerisation only in one direction (5′ → 3′). C) it is a more efficient process. D) RNA dependent DNA polymerase catalyzes polymerisation only in one direction (5′ → 3′). None 50. The net electric charge on a DNA molecule and a histone protein are : A) positive, negative respectively B) negative, positive respectively C) negative, negative respectively D) positive, positive respectively None Name School School City Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Name * Email * Website Comment * Save my name, email, and website in this browser for the next time I comment.