Tag: botany

Questions Related to botany

Which one of the following is the earliest land plant?

botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

  1. Rhynia

  2. Homea

  3. Cordite's

  4. Cook Sonia

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Correct Option: A

Which of the following pairs of plant categories and habitat types are correctly matched?
a. Sociophytes- Shady
b. Heliophytes - Sunny
c. Psammophytes - Sandy
Select the correct answer using the codes given.

botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

  1. $1, 2$ and $3$

  2. $1$ and $2$

  3. $1$ and $3$

  4. $2$ and $3$

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Correct Option: A

Which one is concerned with the temporary adaptation ?

botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

  1. Phytomelanin

  2. Melanin

  3. Tannin

  4. Anthocyanin

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Correct Option: A

In which one of the following geological periods did the first land plants appear?

botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

  1. Precambrian

  2. Permian

  3. Silurian

  4. Carboniferous

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Correct Option: A

Finely dissected leaf may be an adaptation of

botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

  1. xerophytes

  2. psammophytes

  3. halophytes

  4. hydrophytes

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Correct Option: D
Explanation:

Many hydrophytes have production of different forms of leaves in the same plant i.e., heterophylly. In submerged aquatics with free-floating aerial leaves, the submerged leaves are generally linear, ribbon-shaped or finely dissected while the aerial leaves are complete and rounded or lobed.


So, the correct answer is " hydrophytes ".

Which one of the following sets consists only of xerophytes plants?

botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

  1. Suhabool, Teak, Eucalyptus, mango

  2. Baman, Acacia, Ziziphus, teak

  3. Safflower, eucalyptus, asparagus, acacia

  4. Acacia, prosopis, ziziphus, opuntia

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Correct Option: A

Read the following statements about adaptations in desert plants and select the correct ones. 
(i) They have a thick cuticle on their leaf surface 
(ii) They have stomata present in deep sunken pits. 
(iii) They use CAM pathway for photosynthesis.
(iv) They have flattened stems and large sized leaves.
(v) Their stomata remain closed during the day.  

botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

  1. (i), (ii) and (iii)

  2. (ii), (iii) and (v)

  3. (i), (ii) and (iv)

  4. (i), (ii), (iii) and (v)

Show answer
Correct Option: D
Explanation:
Xerophytes can withstand a prolonged period of drought, for this purpose they have certain peculiar adaptations. Thick cuticle is present in these plants. Stomata are generally sunken (deep seated) and open during night only. They have CAM pathway for photosynthesis. Leaves are generally small and scaly. Sometimes leaves are modified into spines to reduce water loss through transpiration.They generally have an extensive root system and a smaller shoot system.Stems may be modified to phylloclades or dadoes to carry out the function of photosynthesis.
So, the correct answer is '(i), (ii), (iii) and (v)'.

The correct sequence of plants in hydrosphere is :

botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

  1. $Oak \rightarrow Lantana \rightarrow Volvox \rightarrow Hydrilla \rightarrow Pistia \rightarrow Scirpus$

  2. $Oak \rightarrow Lantana \rightarrow Scirpus \rightarrow Pistia \rightarrow Hydrilla \rightarrow Volvox $

  3. $Volvox \rightarrow Hydrilla \rightarrow Pistia \rightarrow Scirpus \rightarrow Lantana \rightarrow Oak$

  4. $Pistia \rightarrow Volvox \rightarrow Scirpus \rightarrow Hydrilla \rightarrow Oak \rightarrow Lantana$

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Correct Option: C

Plants which grow in shade are called

botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

  1. Sciophytes

  2. Heliophytes

  3. Oxylophytes

  4. Epiphytes

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Correct Option: A

Resource partinotiong can only take place when

botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

  1. Species have different feeding manner

  2. Species only have different foraging manner.. no matters feeding type different or same

  3. Different fedding and foraging time

  4. None

Show answer
Correct Option: B
Explanation:

Resource partitioning is the phenomenon of evolutionary changes seen in species in response to the selection pressure generated by interspecific competition. Due to this, no two organisms within the same species can coexist in the same niche if they have same resources. They have different foraging manner whether feeding type is different or same. Example of resource partitioning involves two tigers present in their own territories or niches and defending it from other tigers. 

Thus, the correct answer is option B.