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Question & Answer Forum

Next time you have a doubt while studying, you know where to go. By simply posting your questions on Question & Answer Forum, you can have them answered by academic experts. You can also find related videos and explanations for better understanding.

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Syeda answered 1 year(s) ago

Which is a better mode of reproduction sexual or asexual? Why?

Sexual reproduction is considered to be a better mode of reproduction because it creates a hybrid that has more vigor than the parents. It also leads to variations that enable organisms to adapt to the changing...

Asked by Surya rao

Jan 31

  • 9 Answers
  • 4 Likes
  • 20508 Views
Aruna kavitha answered 3 year(s) , 9 month(s) ago

What is the difference between oviparous animals and viviparous animals?

Sol:
Based on the production of young ones, animals can be oviparous or viviparous animals. Oviparous animals Viviparous animals Oviparous animals are the animals which lay eggs. e.g. Hen, Frog, Fi...

Asked by Sanalkumar

Apr 25

  • 2 Answers
  • 1 Like
  • 10041 Views
Syeda answered 1 year(s) ago

What is the difference between zoospore and a zygote?

Sol:

Zoospores are the asexually reproducing structures produced in organisms like Chlamydomonas belonging to kingdom Algae. Zoospores are produced when the organism is reproducing by asexual mo...

Asked by Sagar

Feb 2

  • 2 Answers
  • 0 Like
  • 7825 Views
Syeda answered 1 year(s) ago

what is gongrosira stage?

Answer.

The conditions or in low temperature. Sometimes, thin wall divides the contents of aplanospore in to many parts. Each part develops cysts or hypnospores. This stage of Vaucheria is calle...

Asked by Sanalkumar

Sep 19

  • 2 Answers
  • 0 Like
  • 7423 Views
Aruna kavitha answered 4 year(s) , 2 month(s) ago

What are the different types of parthenogenesis? Explain in detail.

Sol:
Parthenogenesis is the method of obtaining offspring without fertilisation taking place between gametes of opposite sex. This is not to be considered as asexual reproduction. Parthenogenesis is a s...

Asked by Sunny

Apr 8

  • 1 Answer
  • 1 Like
  • 5368 Views
Syeda answered 1 year(s) ago

What is binary fission? What is the major difference in the process of binary fission observed in amoeba with that of paramecium?

Answer.


Binary fission : It involves the longitudinal or transverse splitting of an organism into two equal halves which develop into two separate individuals. Transverse binary...

Asked by Sanalkumar

Apr 25

  • 3 Answers
  • 0 Like
  • 5022 Views
Aruna kavitha answered 4 year(s) , 1 month(s) ago

Why do some papaya plants bear only flowers and not the fruits?

Sol:
Flowers are the reproductive parts of most of the plants. There are two types of flowers based on reproduction. These are bisexual and unisexual flowers. 
*A unisexual flower either contain...

Asked by Sanalkumar

Apr 17

  • 1 Answer
  • 0 Like
  • 4516 Views
Aruna kavitha answered 3 year(s) , 10 month(s) ago

What is monoecious and dioecious condition in plants? Explain with an example.

Sol:
Monoecious is a condition where a single plant produces both male and female flowers which are helpful in fertilisation process. Coconut palm produces both male and female flowers in a single indiv...

Asked by Sanalkumar

Apr 25

  • 1 Answer
  • 1 Like
  • 3616 Views
Aruna kavitha answered 4 year(s) , 1 month(s) ago

Why do Bryophytes and Pteridophytes produce large number of male gametes than the female gametes?

Sol:
Bryophytes and pteridophytes require water as a medium for reproduction. Egg or the female gametophyte remains intact within the mother plant.Male gametes have to be released into water, swim along...

Asked by Sunny

Apr 14

  • 1 Answer
  • 0 Like
  • 3482 Views
Aruna kavitha answered 3 year(s) , 9 month(s) ago

Are parthenogenesis and parthenocarpy the same?

Sol:
Parthenogenesis and parthenocarpy are different phenomena but similar in few aspects.
Parthenogenesis is the method of obtaining a fruit even though the fertilisation does...

Asked by Sanalkumar

Apr 23

  • 2 Answers
  • 0 Like
  • 3420 Views
Adithyan answered 4 year(s) , 1 month(s) ago

Why is Eichhornia crassipes referred to as 'Terror of Bengal'?

Sol:
Eichhornia crassipes is referred to as 'Terror of Bengal'.Eichhornia crassipes is also known as water hyacinth. It is an aquatic plant with attractive flowers.Water hyacinth is the fastest growing...

Asked by Sanalkumar

Apr 17

  • 2 Answers
  • 1 Like
  • 3252 Views
Sanalkumar commented 4 year(s) , 1 month(s) ago

Give some examples of seasonal breeders.

Sol:
Seasonal breeders are the organisms which can breed only during certain time period of the year to produce the offspring.
Some of the examples of seasonal breeders are sheep, goats, horses,...

Asked by Sanalkumar

Apr 17

  • 1 Answer
  • 0 Like
  • 3044 Views
Aruna kavitha answered 4 year(s) , 1 month(s) ago

What role do pituitary and ovarian hormones play during the menstrual cycle?

Sol:
Menstruation does not occur at the middle of the menstrual cycle It is the process which occurs as the first phase of menstrual cycle.Menstrual cycle is the cycle which occurs during reproductive p...

Asked by Adithyan

May 3

  • 1 Answer
  • 0 Like
  • 2517 Views
Aruna kavitha answered 4 year(s) , 4 month(s) ago

What is the role of amitosis in bacteria and amoeba during binary fission?

Sol:

Amitosis is also called as binary fission. Amitosis occurs in bacteria and some protozoans like amoeba and paramecium.

In a bacterial cell, the circular DNA molecule attached to mesosome starts

...

Asked by Anubhav

Jan 15

  • 1 Answer
  • 0 Like
  • 2482 Views
Agam answered 1 year(s) , 8 month(s) ago

Explain the mechanism of binary fission.

In this method of asexual reproduction , a unicellular organism like amoeba , divides into two equal individuals .During the process of binary fission , first the nucleus divides , forming two nuclei . This is...

Asked by Anubhav

Jan 15

  • 3 Answers
  • 0 Like
  • 2454 Views
Aruna kavitha answered 4 year(s) , 10 month(s) ago

Syngamy of animal

Sol:
Syngamy is the fusion of male and female gametes to form a diploid zygoye. This is otherwise called as fertilization or conception.
 
Fertilisation is the fusion o...

Asked by Amit

Aug 9

  • 1 Answer
  • 0 Like
  • 2425 Views
Aruna kavitha answered 3 year(s) , 10 month(s) ago

What are the different methods of vegetative propagation in plants?

Sol:
Vegetative propagation  is the production of new plants from the vegetative parts of the plant.
*Vegetative propagation is an easier method than growing plants from seeds. 
*Vegetat...

Asked by Sanalkumar

Apr 25

  • 2 Answers
  • 0 Like
  • 2317 Views
Aruna kavitha answered 3 year(s) , 10 month(s) ago

How can both meiosis and fertilisation maintain chromosome number constant?

Sol:
Yes, as a result of meiosis, the chromosome number is halved to produce 4 haploid cells. In reproductive gonads, these are gamete cells with 'n' chromosome number. Two gametes with haploid number o...

Asked by Sanalkumar

Apr 25

  • 1 Answer
  • 0 Like
  • 2269 Views
Dr k kesava answered 5 year(s) , 1 month(s) ago

Why the chances of surivial of embryo is greater in viviparous animals than oviparous animals.

In viviparous animals development of embryo occurs inside the female, where as in oviparous animals development of embryo occurs outside the organism.
Because of proper embryonic care and protection, th...

Asked by Sai

May 13

  • 1 Answer
  • 0 Like
  • 2239 Views
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