Please refer to Chapter 1 Reproduction in Organisms MCQ Class 12 Biology with answers below. These multiple-choice questions have been prepared based on the latest NCERT book for Class 12 Biology. Students should refer to MCQ Questions for Class 12 Biology with Answers to score more marks in Grade 12 Biology exams. Students should read the chapter Reproduction in Organisms and then attempt the following objective questions.

MCQ Questions Class 12 Biology Chapter 1 Reproduction in Organisms

The Reproduction in Organisms MCQ Class 12 Biology provided below covers all important topics given in this chapter. These MCQs will help you to properly prepare for exams.

Question. Find out the correct statement –   
(a) Life spans of organisms are necessarily correlated with their sizes
(b) The sizes crows and parrots are not very different, so their life spans are almost similar
(c) A peepal tree has much shorter life span as compared to a mango tree
(d) Reproduction is essential for continuity cf species on the earth

Question. In grafting contact in made between-   
(a) Cambium
(b) Flower
(c) Xylen
(d) Phloem

Question. Asexual reproduction is common –   
(a) Among single celled organisms only
(b) Among plants only
(c) Among single celled organisms, plants and all animals
(d) Among single celled animals, plants and animals with simple organizations

Question. In grafting process, the callus is-   
(a) Formed by proliferation of exposed parachymateads cells of stock and scion
(b) The protective padding fied around the plant
(c) The tissue produced theo’ culture of explant and tied around the joint of stock and scion
(d) Developed by the activity of the cambium of scion and stock

Question. Which of the following parts are used for reg. repdn in pistia-   
(a) Runners
(b) Offsets
(c) Suckers
(d) Stolar

Question. Bamboo species Hovers-   
(a) Every year
(b) Once is 12 years
(c) Only once in life time
(d) Twice is in 50-100 year

Question. Find the covert combination-   
(a) Zoospore in sponge
(b) Conidia in Algae
(c) Genmules in Pericillium
(d) Buds in hydra

Question. The motile reproductive structure of algae and fungi, which directly give rise to new individuals one called-   
(a) Cysts
(b) Conidia
(c) Buds
(d) Zoospores

Question. Seeds are called products of semual reproduced because they-   
(a) Give rise to new plants
(b) Are formed by fusion of gametes
(c) Can be stored for a long time
(d) Are formed by fusion of pollar tubes

Question. A scion in grafted on stock. The quality of fruits produced will be determined by the gero type of-   
(a) Stock
(b) Scion
(c) Both Stock and Scion
(d) Neither stock or scion

Question. In animals and other simple organisms uniparental reproduction is called, called _______ reproduction   
(a) vegetative, asexual
(b) Asexual, vegetative
(c) Parthenogenetic, Amphimictic
(d) A” phimictic, Apomictic

Question. Ciliated motile spores are called-   
(a) Aplanospores
(b) Conidia
(c) Zoospores
(d) Oospones 

Question. Which of the following groups of plants are propagated through undergoend root   
(a) Bupophyllum and kalnctoe
(b) Geiger, potato, anion and zamikard
(c) Pistia, chrysanthemum and pineapple
(d) Sweet potato, Asparagines, Tapioca, Dahlia

Question. Which of the following is not vegetative propagule?   
(a) Rhizome and sucker
(b) Tuber and offset
(c) bulbil (e.g. in Agave), leaf buds, bulb
(d) Antherozoid

Question. Meiosis-   
(a) does not take place in organisms showing asexual reproduction only
(b) takes place in sexually reproducing haploid organism
(c) takes place in sexually reproducing diploid organism . . ,
(d) all of the above are correct

Question. A. The plant was introduced in India because of its beautiful flowers and shape of leaves   
B. It can propagate vegetatively at a phenomenal rate and spread all over water body in a short period
C. It is very difficult to get rid off these plants
A to C points are related to –
(a) Dahlia
(b) Water hyacinth
(c) Azolla (water fern)
(d) Mosses

Question. Select the correct sequence from the following.   
I. Juvenile phase —> Senescent phase —> Reproductive phase
II. Juvenile phase —> Reproductive phase —•> Senescent phase
III. Reproductive phase —» Juvenile phase —> Senescent phase
IV Vegetative phase —> Reproductive phase —> Senescent phase
(a) I and II
(b) I and IV
(c) III and IV
(d) II and. IV

Question. Select the correct sequence from the following –   
(a) Gametogenesis —» Syngamy -—> Zygote —» Embryogenesis
(b) Gametogenesis —» Syngamy —» Embryogenesis —> Zygote
(c) Zygote —> Embryogenesis —> Gametogenesis
(d) Syngamy —> Gametogenesis —> Zygote —> Embryogenesis

Question. In small flies such as Miastor, reproduction occurs in larval stage, it is called-   
(a) neoteny
(b) paedogenesis
(c) patherogenesis
(d) patherocoupy 

Question. Offsprings of oviparous animals are at greater risk as compared to offsprings of viviparous animals because –   
(a) Proper embryonic care and protection is lesser
(b) Embryo is not developed
(c) Progenies are with more variation
(d) Progenies are larger

Question. Some organisms are capable of asexual or sexual reproduction. Under favourable conditions, reproduction proceeds asexually.   
When conditions become more stressful reproduction switches to a sexual mode. Why?
(a) Sexual reproduction is simple and more rapid allowing larger numbers of offspring to be produced
(b) Sexual reproduction requires two separate individuals, who can mutually provide nutrient support during stress
(c) Sexual reproduction produces individuals with new combinations of recombined chromosomes increasing diversity
(d) Asexual reproduction requires more energy

Question. In Monerans (e.g. bacteria) and Protists (Amoeba, Paramecium, Euglena, etc) asexual reproduction occurs by-   
(a) Budding
(b) Multi fission
(c) Binary fission
(d) Amphimixis   

Question. Clone is the product of-   
(a) Sexual reproduction
(b) Sexual or asexual reproduction
(c) Amphimixis
(d) Asexual reproduction

Question. Individuals of a clone-   
(a) Are genetically similar but morphologically different
(b) Are morphologically similar but genetically different
(c) Are morphologically and genetically similar
(d) Are genetically and phenotypically different

Question. The period from birth to the natural death of an organism represents-    
(a) Reproductive phase
(b) Life cycle
(c) Life span
(d) Life style

Question. Oestrus cycle is seen in –   
(a) Cows and sheep
(b) Rats and deers
(c) Dogs and tiger
(d) AII

Question. Spermatids are transformed into spermatozoa by-   
(a) Spermitation
(b) Supermatogenesis
(c) Supermiogenesis
(d) Supermatosis

Question. Menstrual cycle is reported in –   
(a) Only humans .
(b) Only apes
(c) Only monkey
(d) Primates like humans, apes and monkey

Question. Which of the following statements is false?   
(a) Asexual reproduction is simpler than sexual reproduction
(b) Asexual reproduction occurs by fission, budding and fragmentation
(c) In most of the animals both asexual and sexual modes of reproduction are found
(d) Vegetative and sexual modes of reproduction are exhibited by the higher plants

Question. Which of the following is a false statement?
(a) All organisms have evolved similar mechanism to multiply and produce offsprings   
(b) Asexual reproduction is uniparental
(c) Sexual reproduction is biparental
(d) In asexual reproduction no fertilization occurs

Question. Which of the following plants do not show clear cut vegetative, reproductive and senescent phase?   
(a) Perennial plants
(b) Annual plants
(c) Biennial plants
(d) Either b or c

Question. Vegetative propagation in mint occurs by-   
(a) offset
(b) Rhizome
(c) Sucker
(d) Runner

Question. In which of the following organism, self fertilisation in seen.   
(a) Fish
(b) Roundworm
(c) Earth worm
(d) River flike

Question. Which of the following is correct about Strobilanthus kunthiana?   
(a) It flowers once in 12 years.
(b) The plant came to flower last time in September-October 2006.
(c) Its mass flowering converted large hilly tracts of Kerala, Karnataka and Tamil Nadu into blue stretches that attracted a large number of tourists
(d) AII

Question. Among the following which one is not a method of asexual reproduction   
(a) Budding (e.g. yeast)
(b) Layering
(c) Sowing
(d) Binary fission

Question. Which of the following regulates the reproductive processes and the associated behavioural expressions of organisms?   
(a) Hormones
(b) Environmental factors
(c) Abiotic components
(d) Interaction between hormones and environmental factors

Question. Which of the following statements is true about water hyacinth?   
(a) It gives useful products to be used in medicine
(b) It is a marine plant
(c) It takes oxygen from water which causes death of fishes
(d) It is being cultivated in sea water for biogas

Question. In flowering plants both male and female gametes are non-motile. The method to bring them together foffertilization is –   
(a) Water only
(b) Air only
(c) Pollination
(d)Apomixis

Question. Transverse binary fission occurs in-   
(a) Euglena
(b) Amoeba
(c) Hydra
(d) Paramecium

Question. Which of the following sequences of organisms is correct in respect of life spans?   
(a) Banyan tree > Parrot > Elephant > Crocodile > Crow
(b) Crow > Crocodile > Elephant > Parrot > Banyan tree
(c) Banyan tree > Elephant > Crocodile > Parrot > Crow
(d) Crow > Parrot > Elephant > Crocodile > Banyan tree

Question. The fastest method to obtain clones is through –   
(a) induced mutation
(b) parasexual hybridization
(c) parthenogenesis
(d) vegetative reproduction-

Question. No individual is immortal except-    
(a) Single celled organisms
(b) Green plants
(c) Sponges
(d) Drones

Question. Animals which give birth to young ones are said to be –   
(a) Viviparous
(b) Amphibious
(c) Coelomates
(d) Oviparous

Question. Find out the organism with highest life span –   
(a) Tortoise
(b) Horse
(c) Dog
(d) Fruit fly 

Question. “How organisms reproduce” – depends upon –   
(a) Habitat of organisms.
(b) Internal physiology of organisms
(c) Genetic make up
(d) All of the above factors

Question. Ploidy of ovary, anther, egg, pollen, male gamete and zygote are respectively –    
(a)2n, 2n, n, 2n, n,2n
(b) 2n, 2n, n, n, n, 2n
(c) 2n, n, n, n, n, n
(d) 2n, 2nr n, 2n, 2n, 2n

Question. Which of the following is cultivated through vegetative propagation –   
(a) Potato and Sugarcane
(b) Banana and Ginger
(c) Dahlia and Rose
(d) All

Question. Which of the following is viviparous?   
(a) Reptiles
(b)Frog
(c) All mammals
(d) Majority of mammals

Question. Which of the following animal is laving longitudinal binary fission.   
(a) Euglena
(b) Plasmodium
(c) Planaria
(d) Paramoecium 

Question. In majority of organisms male gamete is _______ and female gamete is ________.   
(a) Motile, motile
(b) Non-motile, non-motile
(c) Non-motile, motile
(d) Motile, stationary (non-motile)

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