Tag: biology

Questions Related to biology

Presence of furcula is a characteristic feature 'of

biology skeleton and joints introduction to movement introduction to locomotion movement

  1. Frogs

  2. Reptiles

  3. Birds

  4. Mammals

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Correct Option: C
Explanation:

The clavicle and inter clavicle form a V-shaped furcula or wish bone or merry thought in birds.

A skull excavated from a place had large zygomatic arches, 2 pairs of large incisors, 2 pairs of premolars following a gap and 3 pairs of large molars. The foramen magnum was direction posterior. This skull belongs to a 

biology skeleton and joints introduction to movement introduction to locomotion movement

  1. Predatory mammal with bipedal locomotion

  2. Predaceous dinosaur with bipedal locomotion

  3. herbivorous mammal with Quadrupedal locomotion

  4. Herbivorous dinosaur with Quadrupedal locomotion

Show answer
Correct Option: A
Explanation:

A skull excavated from a place had large zygomatic arches, 2 pairs of large incisors, 2 pairs of premolars following a gap and 3 pairs of large molars. The foramen magnum was direction posterior. This skull belongs to a mammalian skull because it is predatory mammal with bipedal locomotion.

So, the correct option is ‘predatory mammal with bipedal locomotion’.

Which of the following is not the molecule of information :

biology constitutes of diet need for nutrients nutrients needed by the body balanced diet and malnutrition

  1. Protien

  2. DNA

  3. RNA

  4. Deoxyribose

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Correct Option: D
Explanation:

DNA contains the genetic information necessary for the synthesis of RNA and thereby all proteins necessary for the cell to function. RNA is a sequence of nucleotides that contain information for the synthesis of proteins. Deoxyribose is a sugar present in the nucleotides of DNA. Proteins are also provide  information. 

So, the correct option is  'Deoxyribose'

Select erroneous pair


(A) Sweet potato - Bisexual flower
(B) Castor - Endospermic seed
(C) Vallisneria - Monoecious
(D) Zostera - Hypo hydrophily
(E) Poppy - multi carpellary apocarpous gynoecium.

biology the flower pollination and its types germination sexual reproduction in plants

  1. A & B

  2. B & D

  3. C & E

  4. A & D

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Correct Option: A

................... is not unisexual flower.

biology the flower pollination and its types germination sexual reproduction in plants

  1. Coconut

  2. Papaya

  3. Gulmohar

  4. Water-melon

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Correct Option: C
Explanation:

Unisexual flowers only have either the gynoecium or the androecium. Example of unisexual flowers are : Coconut, Papaya, Watermelon.

Bisexual flowers have both gynoecium and androecium.
Examples of bixesual flowers are : Hibiscus, Gulmohar, etc.
So the correct answer is ' Gulmohar'.

Bisexual flowers are found in?

biology the flower pollination and its types germination sexual reproduction in plants

  1. Raceme and catkins

  2. Spike and spikelet's

  3. Corymb and spadix

  4. Catkins and spadix

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Correct Option: A

Which of the following is not an unisexual flower ? 

biology the flower pollination and its types germination sexual reproduction in plants

  1. Coconut

  2. Papaya

  3. Gulmohor

  4. Maize

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Correct Option: C
Explanation:

 A flower that possesses either stamens or carpels but not both. are called a unisexual flower. coconut, maize, and papaya are unisexual flowers because at their development stage they either posses stamen or carpels. so, 'the correct option is Gulmohar'.

Choose odd one w.r.t. sexuality.

biology the flower pollination and its types germination sexual reproduction in plants

  1. Coconut

  2. Cucurbits

  3. Chara

  4. Papaya

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Correct Option: D
Explanation:

Monecious Plants (mono meaning one) have male and female reproductive organs on the same plant. In other words, they are hermaphrodites. The organs may or may not be on the same flower (i.e. the flowers can be perfect or imperfect. Eg. Coconut, cucurbits, chara, etc. 

Dioecious Plants (di meaning two) have either male OR female flowers (not both). As a result, plants are either male OR female. Imperfect flowers only. Eg. Papaya, cannabis, etc. 

So, the correct option is 'Papaya'. 

Flowers which have stamens and pistils are called as

biology the flower pollination and its types germination sexual reproduction in plants

  1. Incomplete flowers

  2. Complete flowers

  3. Unisexual flowers

  4. Homosexual flowers

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Correct Option: B
Explanation:

  1. A flower that lacks one or two of the four whorls is an incomplete flower.
  2. A complete flower has all four whorls calyx, corolla, stamens, and pistil are present.
  3. A unisexual flower has one of the reproductive organ either stamen or pistil is present.
  4. Homosexual flowers are not probable
So the correct option is "Complete flowers".

A complete flower produces

biology the flower pollination and its types germination sexual reproduction in plants

  1. Stamens

  2. Pistils

  3. Both A and B

  4. None of the above

Show answer
Correct Option: C
Explanation:

A flower has four different whorls has calyx, corolla, stamen (male part) and pistil (female part) and if both reproductive parts are present in a flower than it is considered to be a complete flower.

So the correct option is "Both A and B".