Tag: botany

Questions Related to botany

Independent alternation of generations is present in

botany types and parts of plants plant life cycle alternation of generations life span

  1. Angiosperms

  2. Gymnosperms

  3. Pteridophytes

  4. Bryophytes

Show answer
Correct Option: C
Explanation:

The Pteridophytes are independent of alteration in generation. They can live “independent of the parent plant”. While gametophytes cannot live independently and are very small. The pteridophytes have a vascular plant.

A plant living for a few days is called

botany types and parts of plants plant life cycle alternation of generations life span

  1. Annual

  2. Ephemeral

  3. Biennial

  4. Perennial

Show answer
Correct Option: B
Explanation:
  • Ephemeral is any short-lived plant, usually has one or more generations per year, growing only during favorable periods (as when adequate moisture is available) and passing the unfavorable periods in the form of seeds. 
  • Hence the correct option is B. 

The plants that live for more than two years are called :

botany types and parts of plants plant life cycle alternation of generations life span

  1. Annuals

  2. Perennials

  3. Biennials

  4. Triennials

Show answer
Correct Option: B
Explanation:

A.Annuals – Plants with a life span of one year or one season.

B.Perennials – Plants with a life span of more than two years.

C.Biennials – Plants with a life span of two years

D.Triennials – Plants with a life span of three years.

So, the correct option is ‘Perennials’

A biennial plant is one which ___________________.

botany types and parts of plants plant life cycle alternation of generations life span

  1. Lives for two years but flowers towards the end of the second year

  2. Produces two sets of flowers in a year

  3. Grows during the second year from seeds shed turning the previous year

  4. Lives and grows from year to year

Show answer
Correct Option: A

All the individuals with the same genotype constitute an/a.

botany types and parts of plants plant life cycle alternation of generations life span

  1. Ecotype

  2. Phenotype

  3. Cerotype

  4. Biotype

Show answer
Correct Option: A

Which is amphibious?

botany types and parts of plants plant life cycle alternation of generations life span

  1. Casuarina

  2. Wolffia

  3. Polygonum

  4. Hydrilla

Show answer
Correct Option: C

Put a tick mark against the correct alternative in the following statements :
Identify the Kharif crop :

botany types and parts of plants plant life cycle alternation of generations life span

  1. Barley

  2. Mustard

  3. Rice

  4. Wheat

Show answer
Correct Option: A,C
Explanation:

The crops are usually sown at the beginning of the monsoon season around June and harvested by September or October are called Kharif crops. Eg:Barley, Rice.

So, the correct option is ‘Barley and Rice’. 

Haplo-diplontic life cycle is found in ____________.

botany types and parts of plants plant life cycle alternation of generations life span

  1. bryophytes

  2. pteridophytes

  3. fungi

  4. both (a) and (b)

Show answer
Correct Option: D
Explanation:

Haplo-diplontic type of life cycle involves the clear alternation of generations between a haploid gamete producing gametophyte and a diploid spore-producing sporophyte. Both bryophytes and pteridophytes exhibit this kind of life cycle pattern.

So the correct option is D.

Which kind of life-cycle pattern is exhibited by seed-bearing plants?

botany types and parts of plants plant life cycle alternation of generations life span

  1. Haplontic

  2. Diplontic

  3. Haplo-diplontic

  4. All of these

Show answer
Correct Option: B
Explanation:

In a diplontic life cycle, the dominant free-living phase is the diploid (2n). The sporophyte is photosynthetic. The gametophytic phase is represented by single to few-celled haploid gametophyte. All seed-bearing plants, i.e., gymnosperms and angiosperms exhibit this type of life cycle.

So the correct option is B.

Which of the following plants is biennial?

botany types and parts of plants plant life cycle alternation of generations life span

  1. Jack fruit

  2. Pineapple

  3. Banana

  4. Carrot

Show answer
Correct Option: D
Explanation:

The carrot is a root vegetable, usually orange in colour, though purple, black, red, white, and yellow cultivars exist. The carrot is a biennial plant. Carrots are a domesticated form of the wild carrot, Daucus carota, native to Europe and southwestern Asia. The plant probably originated in Persia and was originally cultivated for its leaves and seeds. The most commonly eaten part of the plant is the taproot, although the stems and leaves are eaten as well. 

So the correct option is 'carrot'.