Tag: botany

Questions Related to botany

Tomato is 

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

  1. Annual

  2. Biennial

  3. Perennial

  4. Mammal

Show answer
Correct Option: A
Explanation:

The tomato plant is perennial, but is cultivated as an annual. Tomatoes are called as "tender perennials" because they are truly perennials but they are generally grown as annuals. Other examples of "tender perennials" are bell peppers and sweet potatoes. An annual plant is a plant that usually germinates flowers and dies in one year. True annuals will only live longer than a year if they are prevented from setting seed. A perennial is a plant that lives for more than two years. Some perennials are grown in gardens as annuals, mostly for convenience especially, if they are not considered cold or climate hardy. Tomato are true perennials but tropical annuals includes tomato.

Therefore, the correct answer is option A.

Mark the incorrect statement.

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

  1. Biennials are less common in the garden.

  2. Pelargonium grandiflorum is a perennial.

  3. Jute is a cash crop.

  4. None of the above.

Show answer
Correct Option: B

Which of the following generation is dominant in vascular plants?

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

  1. Gametophytic generation

  2. Diploid sporophytic generation

  3. Haploid sporophytic generation

  4. None of the above

Show answer
Correct Option: B

__________ are plants that go through their entire life cycle in one season and that can be sown outside in the open garden in spring when it flowers.

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

  1. Hardy annuals

  2. Half hardy annuals

  3. Woody perennials

  4. Ephemeral

Show answer
Correct Option: A
Explanation:
Seedlings of Hardy annuals can easily endure the spring. Hence, they can be sown outside in the open garden in spring on flowering.
So, the correct answer is 'Hardy annuals'

Plants that perform their entire life from seed to flower and then to seed within a single growing season is known as

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

  1. Annuals

  2. Biennials

  3. Perennials

  4. None of the above

Show answer
Correct Option: A
Explanation:

A- Annuals are plants that perform their entire life cycle within a single growing season. While biennials complete their life cycle in two years & Perennials live for more than two years.

Which among the following is monocarpic?

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

  1. Coconut

  2. Apple

  3. Bamboo$/$ Agave

  4. Mango

Show answer
Correct Option: C
Explanation:
Which among the following is monocarpic
$\Rightarrow$ Bamboo/Agave(century plant)
$\Rightarrow$ Monocarpic plants are those that flower, set seeds and then die.
$\Rightarrow$ The plant can live a number of years before it will flower. Flowering does not by itself result in the death of the plants but the production of fruits and seeds causes change changes within the plants which lead to death.

The gametophyte in alternation generation is described by

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

  1. Diploid generation

  2. Gamete producing generation

  3. Spores producing generation

  4. All of the above

Show answer
Correct Option: B
Explanation:

The gametophyte generation is also called a sexual phase. Here the haploid gametes are produced from the mother cell. Gametes have a single set of chromosomes, which gradually combine with another haploid gamete to give rise to a diploid cell.

The correct answer is B.

The leaves which fall down very soon after their formation are

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

  1. Deciduous

  2. Caducous

  3. Evergreen

  4. None of the above

Show answer
Correct Option: B
Explanation:

Depending upon the duration of leaf, the plants can be classified into caducous, decidous and evergreen. In evergreen plants, leaves are present in all the seasons and do not shed off combindled. Example includes Pine. In deciduous plants, all the leaves shed at one time. Hence, deciduous plants are without leaves during one season. Example includes Ficus. In caducous plants, leaves shed off as the new bud formation takes place. Example includes rose. In this, the leaves fall down very soon after their formation. Thus, the correct answer is 'Caducous.'

Lantana is a

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

  1. Liana

  2. Tree

  3. Herb

  4. Prickly shrub

Show answer
Correct Option: D
Explanation:
Lantana is a prickly shrub because it has medium-sized woody stems surrounded by pricks on the branches.
So, the correct answer is D.

Plants without leaves during one season are ________.

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

  1. Caducous

  2. Deciduous

  3. Evergreen

  4. Semigreen

Show answer
Correct Option: B
Explanation:

Depending upon the duration of leaf, the plants can be classified into caducous, decidous and evergreen. In evergreen plants, leaves are present in all the seasons and do not shed off combindly. Example includes Pine. In deciduous plants, all the leaves shed at one time. Hence, deciduous plants are without leaves during one season. Example includes Ficus. In caducous plants, leaves shed off during new bud formation. Example includes rose.

Thus, the correct answer is 'Deciduous.'