Chapter 1 Reproduction In Organisms MCQs for Class 12 Biology

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Chapter 1 Reproduction In Organisms MCQs for Class 12 Biology

Here students can practice Chapter 1 Reproduction In Organisms MCQs for Class 12 Biology. All the MCQs are divided into several sub-pages. Each page has 40 MCQs, for the next page just scroll down and click on the buttons. Also you can practice Class 12 Biology MCQs (Multiple Choice Questions) for other units.

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Q 1.: Which of the following group shows bisexual animals only ?

(A) Sponge, cockroach, Amoeba

(B) Amoeba, sponge, leech

(C) Earthworm, sponge, leech

(D) Tapeworm, earthworm, honeybee

Option – C

Q 2.: The vegetative propagule of Bryophyllum is

(A) Leaf buds

(B) Rhizome

(C) Offset

(D) Bulbil

Option – A

Q 3.: Which of the following organisms has the highest number of chromosomes ?

(A) Onion

(B) Ophioglossum

(C) Butterfly

(D) Housefly

Option – B

Q 4.: In flowering plants, both male and female gametes are non-motile. The method to bring them together for fertilisation is

(A) Apomixis

(B) Pollination

(C) Water

(D) Air

Option – B

Q 5.: In which one pair, both the plants can be vegetatively propagated by leaf pieces ?

(A) Chrysanthemum and Agave

(B) Bryophyllium and Asparagus

(C) Agave and Dioscorea

(D) Bryophyllum and Kalanchoe

Option – D

Q 6.: Strobilanthus kunthiana flowers once in

(A) 6 Years

(B) 12 Years

(C) 20 Years

(D) 25 Years

Option – B

Q 7.: Read the following statements and select the incorrect one.

(A) Sponges and coelenterates are unisexual animals.

(B) Papayas and date palms are dioecious plants.

(C) Cucurbits and coconuts are monoecious plants.

(D) Leeches and tapeworms are bisexual animals.

Option – A

Q 8.: Water hyacinth (Eichhornia crassipes) is one of the most invasive weeds primarily because :

(A) It produces secondary metabolites against herbivores

(B) It is predated upon by a large number of organisms

(C) It gets adapted to any fresh water body easily

(D) It can propagate vegetatively at a phenomenal rate

Option – D

Q 9.: In sexual reproduction, offsprings resemble the parents

(A) Structurally but not functionally

(B) Functionally but not structurally  

(C) Both structurally and functionally

(D) Neither structurally nor functionally  

Option – B

Q 10.: The terms homothallic and monoecious are used to denote

(A) Bisexual

(B) Unisexual

(C) Both ‘A’ and ‘B’

(D) None of these  

Option – A

Q 11.: The most significant feature of vegetative propagation is that

(A) It is a method of producing a large number of individuals genetically different from the parent.

(B) It ensures that the progeny individuals are resistant to diseases and pests.

(C) It is a method of producing a large number of individuals genetically identical to the parent.

(D) It is an age-old practice.

Option – C

Q 12.: Vegetative reproduction in mint occurs by

(A) Runner

(B) Sucker

(C) Rhizome

(D) Offset

Option – B

Q 13.: Syngamy can occur outside the body of the organism in :

(A) Fungi

(B) Ferns

(C) Mosses

(D) Algae

Option – D

Q 14.: Parthenogenesis is found in

(A) Hydra

(B) Honey bee

(C) Citrus

(D) Musca domestica  

Option – B

Q 15.: During regeneration, modification of an organ to other organs is known as

(A) Epimorphosis

(B) Morphogenesis

(C) Morphallaxis

(D) Accretionary growth  

Option – A

Q 16.: Select the monocarpic plant out of the following.

(A) Mango

(B) Guava

(C) Rose

(D) Bamboo

Option – D

Q 17.: Strobilanthus kunthiana differs from bamboo in

(A) Being monocarpic

(B) Being polycarpic

(C) Length of juvenile phase

(D) None of these

Option – C

Q 18.: Oestrous cycle is reported in

(A) Humans and monkey  

(B) Chimpanzees and gorillas

(C) Cows and sheep  

(D) Mandrill and cows

Option – C

Q 19.: If a fungal thallus has both male and female reproductive structures, it will be called

(A) Homothallic

(B) Heterothallic

(C) Dioecious

(D) Both ‘B’ and ‘C’  

Option – A

Q 20.: Planaria’s most remarkable characteristics are its ability to

(A) Bioluminescence

(B) Regeneration

(C) Parthenogenesis

(D) Multiple fission

Option – B

Q 21.: When living tissue from a plant is extracted and placed in a medium, it is called ________

(A) Transplantation

(B) Stem cutting

(C) Horticulture

(D) Explant

Option – D

Q 22.: ____________ shows totipotency.

(A) Cork

(B) Xylem

(C) Meristem

(D) All of the above

Option – C

Q 23.: If a butterfly has chromosome number 360 in its meiocyte (2n). What will be the chromosome number in its gametes ?

(A) 90

(B) 180

(C) 270

(D) 360  

Option – B

Q 24.: Appearance of vegetative propagules from the nodes of plants such as sugarcane and ginger is mainly because

(A) Nodes are shorter than internode

(B) Nodes have meristematic cells

(C) Nodes have non-photosynthetic cells.

(D) None of these  

Option – B

Q 25.: The number of chromosomes in a meiocyte of the fruit fly is

(A) 4

(B) 8

(C) 12

(D) 16

Option – B

Q 26.: The most critical event in sexual reproduction is :

(A) Gametogenesis

(B) Gamete transfer

(C) Embryogenesis

(D) Fertilization

Option – D

Q 27.: With respect to organisms exhibiting internal fertilization, organisms exhibiting external fertilization show :

(A) Great synchrony between sexes

(B) Less vulnerability to predation

(C) Large size of egg than sperm

(D) More variation

Option – A

Q 28.: The property of an undifferentiated cell that has the potential to develop into an entire plant is called ______

(A) Budding

(B) Cloning

(C) Totipotency

(D) Regeneration  

Option – C

Q 29.: Which of the following is not used for vegetative propagation ?

(A) Buds

(B) Bulbils

(C) Corms

(D) Antherozoids

Option – D

Q 30.: Which of the following is a post-fertilization event in flowering plants ?

(A) Embryo development

(B) Transfer of pollen grains

(C) Formation of ovary

(D) Formation of flower  

Option – A

Q 31.: Clear-cut vegetative, reproductive and senescent phases cannot be observed in

(A) Annual plants

(B) Perennial plants

(C) Biennial plants

(D) Ephemeral plants

Option – B

Q 32.: In animals exhibiting internal fertilization :

(A) The chance of desiccation of the embryo is high

(B) Vulnerability to predators is increased

(C) There is high synchrony between the two sexes

(D) The male gamete is motile

Option – D

Q 33.: Rotifers ___________

(A) Exhibit adult reproductive structures in juvenile phase

(B) Produce gametes by mitosis

(C) Are plants that can be both monoecious or dioecious

(D) Are animals capable of reproducing by parthenogenesis  

Option – D

Q 34.: Which of the following group shows bisexual animals only?

(A) Sponge, cockroach, Amoeba

(B) Amoeba, sponge, leech

(C) Earthworm, sponge, leech

(D) Tapeworm, earthworm, honeybee

Option – C

Q 35.: The vegetative propagule of Bryophyllum is

(A) Leaf buds

(B) Rhizome

(C) Offset

(D) Bulbil

Option – A

Q 36.: Which of the following organisms has the highest number of chromosomes?

(A) Onion

(B) Ophioglossum

(C) Butterfly

(D) Housefly

Option – B

Q 37.: In flowering plants, both male and female gametes are non-motile. The method to bring them together for fertilisation is

(A) Apomixis

(B) Pollination

(C) Water

(D) Air

Option – B

Q 38.: Flowers are unisexual in

(A) Cucumber

(B) Onion

(C) Pea

(D) China rose

Option – A

Q 39.: Which form of reproduction is incorrectly matched ?

(A) Euglena – Longitudinal binary fission  

(B) Paramecium – Transverse binary fission

(C) Amoeba – Budding

(D) Plasmodium – Multiple fission

Option – C

Q 40.: Grafting is impossible in monocots because

(A) Meristematic tissue is absent

(B) Endodermis is not lined by casparian strip

(C) Casparian strip is present

(D) Vascular cambium is absent  

Option – D

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We hope that these Chapter 1 Reproduction In Organisms MCQs for Class 12 Biology helped you in learning new concepts. All questions are based on NCERT syllabus and some of them have been asked in various competitive exams. You can go to the next pages to practice more for Chapter 1 Reproduction In Organisms MCQs for Class 12 Biology, click on the question range given above.

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