Tag: seed

Questions Related to seed

The plant part which consists of two generations one within the other, is ____________.

biology seeds - structure and germination what is a seed? seeds seed

  1. Germinated pollen grain

  2. Embryo

  3. Unfertilized ovule

  4. Seed

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Correct Option: D

In which of the following plants, cotyledons form the first pair of leaves?

botany seeds - structure and germination what is a seed? seeds seed

  1. Maize

  2. Castor

  3. Rice

  4. Bean

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Correct Option: B
Explanation:

If food is stored inside the endosperm then the cotyledons become small and thin. Such seeds are called as endospermic seeds or albuminous seeds. For example, maize, wheat and other cereals, castor bean seeds and coconut seeds.
So, the correct answer is 'Castor'

Maize grain is

botany seeds - structure and germination what is a seed? seeds seed

  1. Seed

  2. Embryo

  3. Ovule

  4. Fruit

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Correct Option: A
Explanation:

The pericarp of the maize is fused with the seed coat known caryopsis. The entire kernel is referred to as the seed.
Therefore, the correct answer is option A.

In which of the following, the seed germinates and still attached with the main plant?

botany seeds - structure and germination what is a seed? seeds seed

  1. Mango

  2. Rhizophora

  3. Neem

  4. Coconut

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Correct Option: B
Explanation:

Viviparous plants produce seeds that germinate before they detach from the parent plant. In Rhizophora (mangroves), the seed germinates and develops into the seedling when it still attached to the parent plant
So, the correct answer is 'Rhizophora'

After preparing a transverse section out of a cut piece of a
plant axis, it was seen that it has a C shaped open arch of
end arch collateral vascular bundles with secondary growth.
This indicates that it is a transverse section of _______________.

botany seeds - structure and germination what is a seed? seeds seed

  1. A dicotyledonous petiole

  2. A dicot stem at the node

  3. A dicot root at the point where a root branch is corning out

  4. A phylloclade

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Correct Option: A

The scutellum observed in a gram of wheat or maize is comparable to which part of the seed in other monocotyledons?

botany seeds - structure and germination what is a seed? seeds seed

  1. Plumule

  2. Cotyledon

  3. Endosperm

  4. Aleurone layer

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Correct Option: B

A dicot plant lacking cotyledons is

botany seeds - structure and germination what is a seed? seeds seed

  1. Cuscuta

  2. Santalum

  3. Lodoicea

  4. None of the above

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Correct Option: A
Explanation:

 A. Cuscuta- Dodder is parasitic on a very wide variety of plants, including a number of agricultural and horticultural crop species, such as alfalfa, lespedeza. It has no cotyledons.

B. Santalum is a genus of woody flowering plants, the best known and commercially valuable of which is the Indian sandalwood tree. It has two cotyledons.

C. Lodoicea, commonly known as the sea coconut, it has one cotyledons.

So, the correct answer is 'Cuscuta'.

In pea, castor and maize, the number of cotyledons are respectively

botany seeds - structure and germination what is a seed? seeds seed

  1. One, two and two

  2. Two, two and one

  3. Two, one and two

  4. One, two and one

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Correct Option: B
Explanation:

Monocots seed- one cotyledons.

Dicot seed- two cotyledons.
Pea- dicot seed
Castor- dicot seed
Maize- monocot seed
So, the correct answer is 'Two, Two and One'.

Dormancy caused by seed coat impermeability to water and gases can be broken by ______________.

botany seeds - structure and germination what is a seed? seeds seed

  1. Stratification

  2. Scarification

  3. Low temperature

  4. Abscises acid

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Correct Option: A

Consider the following statements.
a. Orchids are monocotyledonous plants
b. Orchids have only ornamental value
c. All orchids are autotrophs
d. Some orchids are epiphytes
Which of these statements are correct?

botany seeds - structure and germination what is a seed? seeds seed

  1. $1$ and $2$

  2. $2$ and $3$

  3. $1$ and $4$

  4. $3$ and $4$

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Correct Option: A