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295 questions found · practise this subject as a set
Show 20 · 50 per page
| # | Question | Subject and topic | Difficulty |
|---|---|---|---|
| 21 | Formation of seeds without fertilisation is called | Biology/Biological Studies/Biotechnology/Biochemistry Special modes |
Easy |
| 22 | Banana is a natural example of | Biology/Biological Studies/Biotechnology/Biochemistry Special modes |
Easy |
| 23 | Embryos formed from nucellar cells in Citrus are genetically | Biology/Biological Studies/Biotechnology/Biochemistry Special modes |
Medium |
| 24 | Why is the introduction of apomixis into hybrid crop varieties of great interest? | Biology/Biological Studies/Biotechnology/Biochemistry Special modes |
Medium |
| 25 | A farmer sprays a growth hormone on unpollinated flowers and obtains seedless fruits. A seed contains three e… | Biology/Biological Studies/Biotechnology/Biochemistry Special modes |
Hard |
| 26 | Which cells of the testis secrete androgens? | Biology/Biological Studies/Biotechnology/Biochemistry Male and female reproductive systems |
Easy |
| 27 | Which layer of the uterus undergoes cyclic changes during the menstrual cycle? | Biology/Biological Studies/Biotechnology/Biochemistry Male and female reproductive systems |
Easy |
| 28 | Why are the testes located in the scrotum outside the abdominal cavity? | Biology/Biological Studies/Biotechnology/Biochemistry Male and female reproductive systems |
Medium |
| 29 | Which is the correct sequence of the path taken by sperm? | Biology/Biological Studies/Biotechnology/Biochemistry Male and female reproductive systems |
Medium |
| 30 | A man's seminiferous tubules contain plenty of germ cells but sperm fail to mature properly because the cells… | Biology/Biological Studies/Biotechnology/Biochemistry Male and female reproductive systems |
Hard |
| 31 | The transformation of spermatids into spermatozoa is called | Biology/Biological Studies/Biotechnology/Biochemistry Gametogenesis |
Easy |
| 32 | Which part of the sperm contains enzymes that help it penetrate the ovum? | Biology/Biological Studies/Biotechnology/Biochemistry Gametogenesis |
Easy |
| 33 | At the time of ovulation in humans, the cell released from the Graafian follicle is a | Biology/Biological Studies/Biotechnology/Biochemistry Gametogenesis |
Medium |
| 34 | How many sperm and how many ova are formed from 50 primary spermatocytes and 50 primary oocytes respectively? | Biology/Biological Studies/Biotechnology/Biochemistry Gametogenesis |
Medium |
| 35 | In spermatogenesis, which hormone acts on Sertoli cells, and which acts on Leydig cells? | Biology/Biological Studies/Biotechnology/Biochemistry Gametogenesis |
Hard |
| 36 | Which event directly triggers ovulation? | Biology/Biological Studies/Biotechnology/Biochemistry Menstrual cycle |
Easy |
| 37 | The first menstruation at puberty is called | Biology/Biological Studies/Biotechnology/Biochemistry Menstrual cycle |
Easy |
| 38 | Which hormone, secreted by the corpus luteum, is essential to maintain the endometrium? | Biology/Biological Studies/Biotechnology/Biochemistry Menstrual cycle |
Medium |
| 39 | In a woman with a regular 28-day cycle, during which days does the follicular (proliferative) phase mainly oc… | Biology/Biological Studies/Biotechnology/Biochemistry Menstrual cycle |
Medium |
| 40 | If the corpus luteum of a non-pregnant woman were made to persist and keep secreting progesterone, what would… | Biology/Biological Studies/Biotechnology/Biochemistry Menstrual cycle |
Hard |