12th Biology chapter 1 Bihar board with NCERT-Details & Highlights
| name of content | 12th Biology chapter 1 full solution |
| content | Biology objective type MCQ question with answer |
| name of subjects | class 12 Biology |
| important for exam | Bihar board & other state board |
| pattern & Level | NCERT & State level question |
12th Biology chapter 1 all objective solutions – download PDF
1. The process of formation of gametes is called
-
- (a) Gametogenesis
- (b) Cytokinesis
- (c) Sporogenesis
- (d) Meiocytes
Ans (A)
2. The menstrualcycle occurs in
-
- (a) Human
- (b) Apes
- (c) Both
- (d) None of the above
Ans (C)
3. Which are does not show Ostrus cycle
-
- (a) Dog
- (b) Cow
- (c) Monkey
- (d) None of the above
Ans (C)
4. Amoeba reproduces by
-
- (a) Binary fission
- (b) Buds
- (c) Conidia
- (d) None of the above
Ans (A)
5. Which one is not bisexual
-
- (a) Leech
- (b) Tapeworm
- (c) Dog
- (d) None of the above
Ans (C)
6. The process of development of the embryo is called
-
- (a) Sporogenesis
- (b) Embryogenesis
- (c) Vivipary
- (d) None of the above
Ans (B)
7. The fusion of gametes is called
-
- (a) Syngamyn
- (b) Pollination
- (c) Parthenogenesis
- (d) None of the above
Ans (A)
8. How many chromosomes are present in a human gamete
-
- (a) 46
- (b) 48
- (c) 23
- (d) None of the above
Ans (C)
9. Which is not unisexual
-
- (a) Cow
- (b) Dog
- (c) Earthworm
- (d) All of the above
Ans (C)
10. What is fertilization?
-
- (a) The fusion of egg with male nuclei.
- (b) The fusion of egg with secondary nucleus
- (c) The fusion of egg with synergid
- (d) None of these
Ans (B)
11. Oviparous are
-
- (a) hen
- (b) snake
- (c) crocodile
- (d) all of these
Ans (D)
BSEB 12th Biology chapter 1 class 12
12. Copulatory organs are not formed in
-
- (a) mammals
- (b) reptiles
- (c) octopus
- (d) birds
Ans (C)
13. In which of the following alternation of generations, the main plant is a gametophyte?
-
- (a) Haplontic
- (b) Diplontic
- (c) Haplo-diplontic
- (d) None of these
Ans (A)
14. In which of the following, calyx covers the whole fruit?
-
- (a) Physalis
- (b) Tomato
- (c) Brinjal
- (d) Litchi
Ans (A)
15. The Oestrus cycle occurs in
-
- (a) dog
- (b) cow
- (c) buffalo
- (d) all of these
Ans (D)
16. Which one of these is haploid?
-
- (a) Egg
- (b) Zygote
- (c) Integument
- (d) Nucellus
Ans (A)
17. Which one of these is diploid?
-
- (a) Egg
- (b) Pollen
- (c) Male gamete
- (d) Zygote
Ans (D)
18. In which of the following plant body is a gametophyte?
-
- (a) Algae
- (b) Fungi
- (c) Bryophytes
- (d) All of these
Ans (D)
19. Which of the following is oviparous?
-
- (a) Crocodile
- (b) Snake
- (c) Hen
- (d) All of these
Ans (D)
20. Diploid chromosome number in potato is
-
- (a) 34
- (b) 40
- (c) 48
- (d) 32
Ans (C)
21. Haploid chromosome number in a dog is
-
- (a) 23
- (b) 39
- (c) 19
- (d) 4
Ans (B)
12th Biology chapter 1 bihar board
22. The multiplication of genetically identical copies of a cultivar by asexual means is called
-
- (a) mass culture of plant cells
- (b) organogenesis
- (c) clonal variation
- (d) None of these
Ans (C)
23. Parthenogenesis is the development of
-
- (a) fruit without hormones
- (b) embryo without fertilization
- (c) embryo from an egg without fertilization
- (d) fruit without fertilization
Ans (C)
24. Upon fertilization, while the ovule develops into a seed, which structure develops from the carpel?
-
- (a) Perisperm
- (b) Pericarp
- (c) Testa
- (d) None of these
Ans (B)
25. Which one is not an oviparous animal?
-
- (a) Snake
- (b) Chicken
- (c) Crocodile
- (d) Human
Ans (D)
26. Which of the following is incorrect?
-
- (a) The length of time which an organism is likely to live is called its life span.
- (b) Binary fission takes place in Bacteria and Amoeba.
- (c) Hydra reproduces asexually by budding.
- (d) Strobilanthus kunthiana flowers once in two years.
Ans (D)
27. New plants develop from leaves in
-
- (a) Eichhornia
- (b) Bryophyllum
- (c) Cycas
- (d) Gladiolus
Ans (B)
28. External fertilization takes place in
-
- (a) algae
- (b) reptiles
- (c) birds
- (d) mammals
Ans (A)
29. External fertilization does not takes place in
-
- (a) oyster
- (b) sea star
- (c) jellyfish
- (d) mammals
Ans (D)
30. Internal fertilization takes place in
-
- (a) birds
- (b) frog
- (c) algae
- (d) fish
Ans (A)
31. Reproduction by ‘budding’ occurs in
-
- (a) yeast
- (B) paramecium
- (C) penicillium
- (D) all of these
Ans (A)
32. Penicillium reproduces by :
-
- (a) budding
- (b) fragmentation
- (c) gemmules
- (d) conidia
Ans (D)
Buhar board 12th Biology chapter 1 objective
33. In which of the following fertilization is internal?
-
- (a) Fishes
- (b) Amphibians
- (c) Majority of Algae
- (d) Angiosperms
Ans (D)
34. Which one is incorrect?
-
- (a) Sexual reproduction involves the formation and fusion of gametes
- (b) Pre-fertilization events include gametogenesis and gamete transfer
- (c) Gametes are diploid in nature.
- (d) Syngamy occurs between the male and female gametes
Ans (C)
35. Morphologically and genetically similar organisms are called
-
- (a) clone
- (b) somaclones
- (c) cosmids
- (d) hybrids
Ans (A)
36. In which of the following water is not essential for gamete transfer?
-
- (a) Algae
- (b) Bryophytes
- (c) Pteridophytes
- (d) Gymnosperms
Ans (D)
37. Which one has a diploid parental body?
-
- (a) Fungi
- (b) Human
- (c) Algae
- (d) Bryophytes
Ans (B)
38. Binary fission takes place in
-
- (a) Amoeba
- (b) Paramecium
- (c) Bacteria
- (d) None of the above
Ans (B)
39. Which of the following reproduces by budding?
-
- (a) Hydra
- (b) Saccharomyces
- (c) Amoeba
- (d) (a) and (b)
Ans (D)
40. Aplanospores are formed in
-
- (a) Sycon
- (b) Rhizopus
- (c) Mucor
- (d) (b) and (c)
Ans (D)
41. Conidia are formed in
-
- (a) Aspergillus.
- (b) Rhizopus
- (c) Chlamydomonas
- (d) None of the above
Ans (A)
class 12th Biology chapter 1 objective
42. Which of the following is a modified stem and used for vegetative propagation?
-
- (a) Rhizome
- (b) Bulb
- (c) Tuber
- (d) All of the above
Ans (D)
43. Which statement is correct with regard to Eichhornia?
-
- (a) It is an aquatic plant.
- (b) It is also known as the terror of Bengal.
- (c) It reproduces by offset.
- (d) All of the above
Ans (D)
44. Which one is monocarpic?
-
- (a) Agave
- (b) bamboo
- (c) (a) and (b)
- (d) Kalanchoe
Ans (C)
45. In which of the following ‘new plants develop on leaves?
-
- (a) Bryophyllum
- (b) Kalanchoe
- (c) (a) and (b)
- (d) Helianthus
Ans (C)
46. Internal fertilization takes place in
-
- (a) Mammals
- (b) Reptiles
- (c) Birds
- (d) All of the above
Ans (D)
47. Which of the following type of gametes occur in Chlamydomonas?
-
- (a) Isogametes
- (b) Anisogametes
- (c) Oogametes
- (d) All of the above
Ans (D)
48. Which of the following is a hermaphrodite?
-
- (a) Tapeworm
- (b) Sponge
- (c) Earthworm
- (d) All of the above
Ans (D)
49. Which of the following are formed without completion of the fertilization process?
-
- (a) Bee
- (b) Pea
- (c) Rotifers
- (d) (a) and (c)
Ans (D)
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Bihar board 12th Biology chapter 1 complete objective
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Bihar board 12th science stream subjects wise solution
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| SL.N. | Subject name with solutions |
| 01 | Physics |
| 02 | Chemistry |
| 03 | Biology |
| 04 | Math |
| 05 | Hindi |
| 06 | English |