Tag: biology

Quizzes (1160) Questions (12174)

Questions Related to biology

Multiple choice biology hygiene - a key to healthy life mosquitoes and malaria diseases caused by mosquitoes contaminated water spreads disease

Houseflies act as a ___________ source for birds.

  1. Protein

  2. Carbon

  3. Mineral

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Houseflies are generally found feeding and breeding on trash and rotten food where they get attached to several pathogens which are further transmitted by these flies to a healthy host. Housefly pupae contain large amounts of protein and are thus especially beneficial to the various birds, reptiles, and insects that prey on them. 

So, the correct answer is option A.

Multiple choice biology constitutes of diet role of vitamins functions and principal sources of vitamins and minerals need for nutrients

A person suffering from malaria gets fever when

  1. Exoerythrocytic cycle is completed

  2. Signet ring stage is formed

  3. RBC generally ruptured and haemozoin granules are released

  4. All of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Rupture of RBC result in septicemia because of release of hematite granules in the blood resulting in characteristic chills and high fever.

Multiple choice biology constitutes of diet role of vitamins functions and principal sources of vitamins and minerals need for nutrients

There is national eradication programme for a disease caused by the deficiency of an element

  1. Iodine

  2. Boron

  3. Copper

  4. Chlorine
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Iodine deficiency disorders are a major public health concern, leading to national programs like the National Iodine Deficiency Disorders Control Programme to ensure adequate intake.

Multiple choice biology constitutes of diet role of vitamins functions and principal sources of vitamins and minerals need for nutrients

Below are few statements given about diseases


$i$ They are caused by germs.
$ii$ They are caused due to lack of nutrients in our diet.
$iii$ They can be passed on to another person through contact.
$iv$ They can be prevented by taking a balanced diet.

Which pair of statements best describes a deficiency disease?

  1. $i$ & $ii$
  2. $ii$ & $iii$
  3. $ii$ & $iv$
  4. $i$ & $iii$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A disease that is caused by a dietary deficiency of specific nutrients, especially a vitamin or mineral,possibly stemming from insufficient intake, digestion, absorption, or utilization of a nutrient is called as deficiency disease. It can be prevented by taking a balanced diet.

Multiple choice biology constitutes of diet role of vitamins functions and principal sources of vitamins and minerals need for nutrients

Match column I with column II and select the correct option from the codes given below.

Column I(Deficient elements) Column II(Deficiency symptoms)
(a) Calcium (i) Chlorosis and necrosis appearing first in young leaves
(b) Magnesium (ii) Bronze colour in leaves
(c) Chlorine (iii) Delay in flowering, premature fall of flower buds
(d) Phosphorus (iv) Interveinal chlorosis with purple anthocyanin pigmentation

  1. (a) - (i) , (b) - (ii), (c) - (iii), (d) - (iv)

  2. (a) - (iv), (b) - (iii), (c) - (ii), (d) - (i)

  3. (a) - (i), (b) - (iii), (c) - (ii), (d) - (iv)

  4. (a) - (i), (b) - (iv), (c) - (ii), (d) - (iii)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Calcium deficiency causes chlorosis and necrosis in young leaves. Magnesium deficiency leads to interveinal chlorosis with purple pigmentation. Chlorine deficiency causes wilting and bronze color in leaves. Phosphorus deficiency leads to delayed flowering and premature bud drop.

Multiple choice biology ecosystem : structure and function biogeochemical cycles - sedimentary biogeochemical cycle nitrogen and phosphorus cycles

In water receiving regions, what does forest regulate

  1. Hydrological cycle

  2. Carbon cycle

  3. Nitrogen cycle

  4. Calcium cycle
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Forests play a crucial role in the hydrological cycle by regulating water infiltration, transpiration, and runoff, which helps maintain water balance in receiving regions.