Tag: dicot seed

Questions Related to dicot seed

Caruncle is derived from

biology the flower dicot seed structure of monocot and dicot seed the seed

  1. Peduncle

  2. Cotyledon

  3. Outer integument

  4. Inner integument

Show answer
Correct Option: C
Explanation:
In plants,Caruncle is an outgrowth near the hilum on the seeds of some plants of family Euphorbiaceae (like Hevea ). Outer integument is the outermost part of the ovule . During development of the ovule, the outer integument differentiates into different layers of seed coat. Caruncle is also derived from outer integument.
So, the correct option is 'Outer integument'

Pea nut or ground nut oil is obtained from

biology the flower dicot seed structure of monocot and dicot seed the seed

  1. Lathyrus odoratus

  2. Pisum sativum

  3. Arachis hypogea

  4. Brassica juncea

Show answer
Correct Option: C
Explanation:

Peanut (Arachis hypogaea) oil is the refined fixed oil obtained from the seed kernels of Arachis hypogaea. Hydrogenated peanut oil, peanut acid, and peanut glycerides are all derived from peanut oil. It is light yellow-colored oil and extremely stable, with nourishing and protective properties.

In which of the following, multiciliated/multiflagelated
anthropoids are present

biology seed dicot seed structure of monocot and dicot seed the seed

  1. Riccia and Funaria

  2. Pteris and Cycas

  3. Riccia and Cycas

  4. Marchantia and Riccia

Show answer
Correct Option: B
Explanation:

In pt eris antheridum is having (about 32) multiflagellated, coiled (2 - 3 coils) anthropoids or spermatozoids.

X is scar on the seed through which the developing seeds were attached to the fruit; above the X is a small pore called Y.
Identify X and Y and select the correct option.

biology seed dicot seed structure of monocot and dicot seed the seed

  1. X - Micropyle, Y - Hilum

  2. X - Hilum, Y - Micropyle

  3. X - Testa, Y - Tegmen

  4. X - Chalaza, Y - Micropyle

Show answer
Correct Option: B
Explanation:

X - Hilum - it is the point of attachmnet of the ovule to its stalk or the funicle

Y - Micropyle, the pore or the opening of the ovule, where the integuments do not cover the ovule. It is an opening for the entry of the pollen tube during fertilization.
So, the correct answer is (b).

In dicots the most common pollen tetrad is?

biology seed dicot seed structure of monocot and dicot seed the seed

  1. Isobilateral

  2. Tetrahedral

  3. Linear

  4. Decussate

Show answer
Correct Option: B

A dicot plant lacking cotyledons is

biology seed dicot seed structure of monocot and dicot seed the seed

  1. Cuscuta

  2. Santalum

  3. Lodoicea

  4. None of the above

Show answer
Correct Option: A
Explanation:

Cuscuta is a plant whose embryos lack cotyledons. It is called dicot plant because the stem of cuscuta has as dicot structure. 

 In Groundnut, oil is stored in

biology seed dicot seed structure of monocot and dicot seed the seed

  1. Embryo axis

  2. Endosperm

  3. Cotyledons

  4. None of the above

Show answer
Correct Option: C
Explanation:

In groundnut, oil is stored in the seeds cotyledons.  It is a legume plant.  Each seed of groundnut has 2 cotyledons. 

In monocotyledons, the leaves

biology seeds - structure and germination dicot seed monocot seed structure of monocot and dicot seed

  1. Arise at the tip of the stem only

  2. Do not sheath the stem

  3. Sheath the stem

  4. Sheath the stem only in the lower portion

Show answer
Correct Option: C
Explanation:

The stems of monocots are usually unbranched and fleshy. They do not grow thicker from year to year. New leaves often grow wrapped in a protective sheath formed by the older leaf.

Some plants of Angiosperms are called as monocotyledons, because their seedling contains

biology seeds - structure and germination dicot seed monocot seed structure of monocot and dicot seed

  1. No cotyledon

  2. Three cotyledons

  3. One cotyledon

  4. Four cotyledons

Show answer
Correct Option: C
Explanation:

Monocots have floral parts in multiples of three and the seed contains one cotyledon. 

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

biology seeds - structure and germination dicot seed monocot seed structure of monocot and dicot seed

  1. Plumule

  2. Cotyledon

  3. Endosperm

  4. Aleurone layer

Show answer
Correct Option: B
Explanation:

The scutellum is part of the structure of a barley and rice seed, the modified seed leaf. The scutellum can also refer to the equivalence of a thin cotyledon in monocots. It is very thin with high surface area and serves to absorb nutrients from the endosperm during germination. The scutellum is believed to contain an as yet unidentified protein transporter that facilitates starch movement from the endosperm to the embryo.
Thus, the correct answer is option B.