Asexual Reproduction

Q. Given below are some examples of commensalism.
A. Orchid and mango tree
B. Sea anemone and clownfish
C. Cattle egret and grazing cattle
D. Barnacles and whale

Select the option which includes only the organisms benefited from this interaction.

1. Mango tree, grazing cattle, sea anemone, whale
2. Orchid, clownfish, grazing cattle, barnacles
3. Orchid, clownfish, cattle egret, barnacles
4. Mango tree, sea anemone, cattle egret, whale

Q. Identify the asexual reproductive structures and organisms in which they are seen

1. a- gemmules- Spongilla, b- zoospores- Chlamydomonas, c- conidia- Penicillium, d- bud- Hydra
2. a- conidia- Penicillium, b-gemmules- Spongilla, c-zoospores- Chlamydomonas, d- bud- Hydra
3. a- conidia- Chlamydomonas, b-gemmules- Spongilla, c-zoospores- Penicillium, d- bud- Yeast
4. a- zoospores- Chlamydomonas, b-gemmules- Planaria, c-conidia- Penicillium, d- bud- Yeast

Q.

Why do make honey bees do not have father and cannot havesons but have grandfather and can have grandsons?

Q.

What is androgenesis?

Q.

In which of these, syngamy can occur outside the body of the organism?

1. Fungi

2. Ferns

3. Algae

4. Mosses

Q.

Identify the incorrect statement.
(a) In asexual reproduction, the offspring produced are morphologically and genetically identical to the parent.
(b) Zoospores are sexual reproductive structures.
(c) In asexual reproduction, a single parent prodices offspring with or without the formation of gametes.
(d) Conidica are asexual structure in Penicillium.

Q.

Development of an embryo without fertilization is called as

1. Apomixis

2. Parthenocarpy

3. Parthenogenesis

4. None OF these

Q. During unfavourable conditions, Amoeba exhibits:

1. Spore formation
2. Parthenogenesis
3. Fragmentation
4. Hibernation

Q.

Write a short note on vegetative propagation.

Q.

How does the progeny formed from asexual reproduction differ from those formed by sexual reproduction?

Q.

What are the advantages and disadvantages of asexual reproduction?

Q.

What are hermaphrodites? Mention one example.

Q. In which of the following fungi are asexual spores, called conidia, produced?
a. Colletotrichum
b. Agaricus
c. Claviceps
d. Mucor

1. b and d
2. a and b
3. a and c
4. a and d

Q. Hydra reproduces by the mechanism of ____________________.

1. budding and multiple fission
2. budding and fragmentation
3. fragmentation and spore formation
4. none of the above

Q. Match the following from column 1 and column 2

	Column 1		Column 2
p	Penicillium	1	Zoospores
q	Hydra	2	Gemmules
r	Chlamydomonas	3	Buds
s	Sponge	4	Conidia

1. p - 2, q - 3, r - 1, s - 4
2. p - 1, q - 4, r - 3, s - 2
3. p - 2, q - 1, r - 4, s - 3
4. p - 4, q - 3, r - 1, s - 2

Q. Which of the following is not true about asexual reproduction?

1. Asexual reproduction is common among multicellular organisms.
2. In asexual reproduction, a single individual (parent) is capable of producing offspring.
3. The offspring that are produced by asexual reproduction are not only identical to one another but are also exact copies of their parent and are called clones.
4. Binary fission is a type of asexual reproduction.

Q.

What is a progeny?

Q. An organism breaks its body into many pieces and each piece then develops into a new individual. Identify the organism and its method of reproduction.

1. Hydra - budding
2. Spirogyra - fragmentation
3. Amoeba - binary fission
4. Penicillium - conidiospores

Q. What is meant by heterothallism?
please explain in brief.

Q. The eyes of potato are ___.

1. Shoot buds
2. Root buds
3. Axillary buds
4. Flower buds

Q.

Why are female Ascaris longer than males?

Q. Monoadelphous character is found in :

1. Brassicaceae (Mustard)
2. Malvaceae (Chinarose)
3. Poaceae (Grass)
4. Solanaceae (Potato)

Q. Prostaglandins present in semen help in

1. providing main energy source for sperms
2. facilitating uterine contractions
3. coagulation of semen before ejaculation
4. providing exclusive antimicrobial properties

Q. The figure below shows a section of the human ovary. Select the option which gives the correct identification of labellings (A to D).

1. A: Secondary follicle; B: primary follicle; C: Graafian follicle; D: Corpus Luteum

2. A: Primary follicle; B: Secondary follicle; C: Ovum; D: Corpus Luteum
3. A: Primary follicle; B: Secondary follicle; C: Graafian follicle; D: Corpus Luteum
4. A: Primary follicle; B: Ovum; C: Corpus Luteum ; D: Graafian follicle

Q.

Condoms are one of the most popular methods of contraception because of the following reasons:

1. All of the above

2. They help in reducing the risk of STDs.

3. They are effective barriers for insemination.

4. They do not interfere with the coital act.

Q. In grafting, the rooted plant is called stock. The stem cutting from the donor plant is called

1. callus
2. scion
3. bud graft
4. root stock

Q. Cell aggregate body plan is found in the:

1. Volvox
2. Colonial protozoans
3. Porifera
4. a and c both

Q.

The term __ is used to describe morphologically and genetically similar individuals.

Q.

What is the structure of Chlamydomonas?

Q. In which of the following plants, vegetative reproduction occurs by foliar adventitious buds?

1. 
2. 
3. 
4.