Tag: seed

Quizzes (7) Questions (64)

Questions Related to seed

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

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

  1. Germinated pollen grain

  2. Embryo

  3. Unfertilized ovule

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

A seed contains the embryo (new generation) and the seed coat/endosperm (remnants of the parent plant/previous generation), effectively housing two generations.

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

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

  1. Maize

  2. Castor

  3. Rice

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

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

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

  1. Mango

  2. Rhizophora

  3. Neem

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

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

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 _______________.

  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
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A C-shaped vascular bundle arrangement is characteristic of the petiole in dicotyledonous plants, which supports the leaf blade.

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

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

  1. Plumule

  2. Cotyledon

  3. Endosperm

  4. Aleurone layer
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In monocot seeds like wheat or maize, the scutellum is a modified cotyledon that serves to absorb nutrients from the endosperm for the developing embryo.

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

A dicot plant lacking cotyledons is

  1. <p>Cuscuta</p>

  2. <p>Santalum</p>

  3. <p>Lodoicea</p>

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

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

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

  1. One, two and two

  2. Two, two and one

  3. Two, one and two

  4. One, two and one
Reveal answer Fill a bubble to check yourself
B Correct answer
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'.

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

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?

  1. $1$ and $2$
  2. $2$ and $3$
  3. $1$ and $4$
  4. $3$ and $4$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Orchids are indeed monocotyledonous plants and many tropical orchids grow as epiphytes on tree trunks for sunlight. However, they have immense ecological and medicinal value beyond just ornamentation, and some orchids (like certain mycoheterotrophic species) are not fully autotrophic.