Tag: biology

Questions Related to biology

Hormones are substances that fall into two basic categories:

biology control and coordination in living organisms enzymes and hormones hormones coordination in human beings- chemical control

  1. stimulator hormones and receptor hormones

  2. male hormones and female hormones

  3. non-steroid (peptide) hormones and steroid hormones

  4. inter-organ and inter-organismic

Show answer
Correct Option: C
Explanation:

Hormones are a substance that falls into two basic categories which are non-steroid (peptide, insulin) hormones and steroid hormones (adrenaline, testosterone).

Nongenetic RNA is of

biology control and coordination in living organisms enzymes and hormones hormones coordination in human beings- chemical control

  1. Two types

  2. Three types

  3. Four types

  4. One type

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Correct Option: B
Explanation:

There are 3 types of non genetic RNA's 

  1. mRNA = messenger RNA
  2. tRNA = transfer RNA
  3. rRNA = ribosomal RNA
Correct option B

Read the following statement and select the incorrect ones.
(i) Homeostasis ensures constant osmotic concentration of cells. 
(ii) The famous keolado National park (Bharatpur) in Rajasthan hosts thousands of migratory birds coming from Siberia, in every winter.
(iii) 99% of animals and nearly all plants are regulators.
(iv) The conformers are able to maintain their body temperature inspire of changes in ambient temperature. 

biology adaptation plant adaptation adaptation in plants plant habitat

  1. (i) and (ii)

  2. (ii) and (iii)

  3. (iii) and (iv)

  4. (i) and (iv)

Show answer
Correct Option: C
Explanation:

About 99 percent of animals and nearly all plants do not have a mechanism to maintain a constant internal body environment.Their body temperature changes with the surrounding temperature.They are called conformers.

Vikramshila Gangetic Dolphin Sanctuary, India's only dolphin sanctuary, is located in which among the following states of India?

biology adaptation plant adaptation adaptation in plants plant habitat

  1. West Bengal

  2. Bihar

  3. Assam

  4. Uttar Pradesh

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Correct Option: B

Which of the following is incorrect match?

$1$) Aquatic annelids possess lateral appendages which help in swimming Parapodia
$2$) Balance organs in aquatic and Aurelia Arthropods Statocyst
$3$) Spiders spins web by using Spinnerets
$4$) The body is supported by a proteinaceous skeleton in porifera Spicules
biology adaptation plant adaptation adaptation in plants plant habitat

  1. $1$

  2. $2$

  3. $3$

  4. $4$

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Correct Option: A

All the following statements are correct except:

biology adaptation plant adaptation adaptation in plants plant habitat

  1. Our National aquatic animal is Platanista( Indian Dolphin) found in Indus, Ganges and Brahmaputra rivers

  2. Chaetopleura is commonly known as chiton

  3. Electric organs are found in Trygon

  4. In birds endoskeleton is fully ossified

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Correct Option: A

What is oceans warming depth?

biology adaptation plant adaptation adaptation in plants plant habitat

  1. 2000m

  2. 1000m

  3. 3000m

  4. 7000m

Show answer
Correct Option: C

Flying animal are known as

biology adaptation plant adaptation adaptation in plants plant habitat

  1. Arboreal

  2. Fossorial

  3. Volant

  4. Terrestrial

Show answer
Correct Option: C
Explanation:

A number of animals have evolved aerial locomotion either by powered flight or by gliding. Animal that fly is a volant. Volant animals constitute a very interesting and highly specialized group of vertebrates. They have undergone extensive adaptive radiations and have beautifully modified their body to lead a perfect aerial life.

So, the correct answer is 'Volant'.

Besides pneumatic bones, another useful flight adaptation in birds is

biology adaptation plant adaptation adaptation in plants plant habitat

  1. Syrinx

  2. Pygostyle

  3. Furcula

  4. Quill feathers

Show answer
Correct Option: D
Explanation:
Besides pneumatic bones, another useful flight adaptation in birds is quill feathers. Each quill feather has a central stem or scapus. It is divided into a lower hollow part called the quill or calamus and a solid upper part termed rachis. Small filaments or barbs are attached to rachis. The barbs remain attached with one another to form a continuous blade for striking the air in flight.
So, the correct answer is 'Quill feathers'.

State whether the following statements are true or false.
The adaptations for flight are called fossorial adaptations

biology adaptation plant adaptation adaptation in plants plant habitat

  1. True

  2. False

Show answer
Correct Option: B
Explanation:

The adaptations for flight are called aerial adaptations. Many of a bird's bones are hollow which makes birds' bodies lightweight. Flying birds have large chest muscles that move the wings. Birds have feathers that help them fly. Fossorial adaptations are for those animals, which primarily live underground.

So, the correct option is 'False'.