Tag: biology

Questions Related to biology

Which of the following is richly supplied with blood capillaries?
biology life processes: control and coordination structure and function of brain human brain nervous and endocrine system in humans

  1. Duramater

  2. Arachnoid

  3. Piamater

  4. Epidermis

Show answer
Correct Option: C
Explanation:

The meninges are the layers that are closely present around the brain. The dura mater is an outermost tough and fibrous layer. It is followed by the arachnoid mater that forms the middle meninx. The piamater is the innermost meninx which adheres closely to the surface of the brain. It is highly vascular due to the rich supply of the blood vessels. So, it provides oxygen and nutrients to the cells of the brain.

Hence, the correct answer is 'Piamater'

Perspiration cools the body by

biology weather, climate and adaptation of animals to different climates climate and weather weather, climate and adaptations of animals to climate atmosphere and its components

  1. Advective heat transfer

  2. Radiative heat transfer

  3. Conductive heat transfet

  4. Latent heat transfer

Show answer
Correct Option: D

In the mountains, there is lot of moisture and water and still the plants are xerophytes, because

biology weather, climate and adaptation of animals to different climates climate and weather weather, climate and adaptations of animals to climate atmosphere and its components

  1. Water turns into snow on mountains

  2. Water runs away due to the presence of slopes and can not be used by plant (physiological dryness)

  3. Rocks of mountains cannot absorb water

  4. None of them is correct

Show answer
Correct Option: B
Explanation:

(b) Steep slopes cause fast, running of water which result in erosion and do not Permit the accumulation of hymns so the soil cordless denjuded` In sulked soil plants cannot grow properly and vegetation changes into xerophytic plants. In valleys humus accumulates, so they have luxuriant vegetation and slopes contain xerophytic Plants.




___________ is a long term pattern of weather at a particular area.

biology weather, climate and adaptation of animals to different climates climate and weather weather, climate and adaptations of animals to climate atmosphere and its components

  1. Raising sun

  2. Climate

  3. Setting sun

  4. Rainbow

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Correct Option: B

In the Northern Hemisphere, this day has the fewest hours of daylight:

biology weather, climate and adaptation of animals to different climates climate and weather weather, climate and adaptations of animals to climate atmosphere and its components

  1. Summer solstice

  2. Winter solstice

  3. Vernal equinox

  4. Autumnal equinox

Show answer
Correct Option: B

Which among the following is India's first state to release a Climate Change Action Plan?

biology weather, climate and adaptation of animals to different climates climate and weather weather, climate and adaptations of animals to climate atmosphere and its components

  1. Himachal Pradesh

  2. Delhi

  3. Haryana

  4. Kerala

Show answer
Correct Option: B

To which kingdom Amoeba and Euglena belong in Whittaker's classification?

biology the world of microbes protista protozoa five kingdoms of living organisms

  1. Monera

  2. Plantae

  3. Protista

  4. Animalia

Show answer
Correct Option: C
Explanation:

The five kingdom classification was proposed by R.H. Whittaker in 1969. The five kingdoms were formed on the basis of characteristics such as cell structure, mode of nutrition, the source of nutrition and body organization. It includes Kingdom Monera,  Protista, Fungi, Plantae, and Animalia. According to Whittaker's 5 kingdom classification, unicellular eukaryotes belong to kingdom Protista. Amoeba and euglena are unicellular eukaryotic organisms so they belong to kingdom Protista.

So, the correct answer is 'Protista'.

Which do not belong to Protista?

biology the world of microbes protista protozoa five kingdoms of living organisms

  1. Euglenoids

  2. Zooflagellates

  3. Methanogens

  4. Ciliates

Show answer
Correct Option: C
Explanation:
Unicellular, eukaryotic organisms belongs to the kingdom protista. It includes, chrysophytes, dinoflagellates, protozoans, euglenoids, myxomycetis.
Methanogens are unicellular prokaryotes, belongs to the kingdom monera.
So, the correct option is 'Methanogens'.

Read the following statements.

biology the world of microbes protista protozoa five kingdoms of living organisms

  1. Contractile vacuoles eliminates excess water from the body

  2. Glomerular kidney is present in Fresh water fishes

  3. A glomerular kidney possess less no. of nephrons

  4. Chloride cells are present on the stomach wall of frog

Show answer
Correct Option: A
Explanation:

Contractile vacuoles are membrane-bound cellular organelle found in many microorganisms. These periodically expand and get filled with water and contract, expelling the contents to the exterior of the cell.

These are very important for maintaining the hydrostatic balance of the particular cell.
It is an important feature of Eukaryotic cell especially protozoa and it plays important role in osmoregulation.
The correct option is 'Contractile vacuoles eliminates excess water from the body'

Protista includes ________________.

biology the world of microbes protista protozoa five kingdoms of living organisms

  1. Eutaryotic organisms

  2. Autotrophic in nutrition

  3. Heterotrophic in nutrition

  4. All organisms which show locomotion

Show answer
Correct Option: A
Explanation:

  • Kingdom Protista includes Eukaryotes can be unicellular or multicellular. they produce sexually or asexually  eg. Plasmodium( cause malaria) , Ameoba.
  • Autotrophic organism creat their own food by fixing carbon .  kingdom Plantae includes all unicellular or multicellular autotrophic organism.

  • Heterotrophic organism obtain their food from organic sources , hence kingdom Fungi and kindom Animalia  includes heterotrophic organism.
  • so the correct answer is "eukaryotic organism".