Tag: botany

Quizzes (264) Questions (5276)

Questions Related to botany

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

Tomato is 

  1. Annual

  2. Biennial

  3. Perennial

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

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

Mark the incorrect statement.

  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.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Biennials are indeed less common in gardens compared to annuals and perennials, Pelargonium grandiflorum is a well-known perennial, and jute is widely cultivated as a cash crop. Since all the statements A, B, and C are actually correct, the correct choice indicating an incorrect statement is none of the above.

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

Which of the following generation is dominant in vascular plants?

  1. Gametophytic generation

  2. Diploid sporophytic generation

  3. Haploid sporophytic generation

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

In vascular plants (tracheophytes), the diploid sporophyte is the dominant phase of the life cycle. The gametophyte is reduced and dependent on the sporophyte.

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

__________ 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.

  1. Hardy annuals

  2. Half hardy annuals

  3. Woody perennials

  4. Ephemeral
Reveal answer Fill a bubble to check yourself
A Correct answer
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'
Multiple choice botany types and parts of plants plant life cycle alternation of generations life span

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

  1. Annuals

  2. Biennials

  3. Perennials

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

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

Which among the following is monocarpic?

  1. Coconut

  2. Apple
  3. Bamboo$/$ Agave

  4. Mango
Reveal answer Fill a bubble to check yourself
C Correct answer
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.
Multiple choice botany types and parts of plants plant life cycle alternation of generations life span

The gametophyte in alternation generation is described by

  1. Diploid generation

  2. Gamete producing generation

  3. Spores producing generation

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

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

The leaves which fall down very soon after their formation are

  1. Deciduous

  2. Caducous

  3. Evergreen

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
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.'

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

Plants without leaves during one season are ________.

  1. Caducous

  2. Deciduous

  3. Evergreen

  4. Semigreen
Reveal answer Fill a bubble to check yourself
B Correct answer
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.'