Concept of Seed

Q. Difference between racemose and cymose inflorescence

Q.

In some members of which of the following pairs of families, pollen grains retain their viability for months after release?

1. Rosaceae ; Leguminosae

2. Poaceae ; Leguminosae

3. Poaceae ; Solanaceae

4. Poaceae ; Rosaceae

Q.

What is meant by perisperm?

Q.

Define epigeal germination.

Q.

Differentiate between epigeal and hypogeal germination?

Q. In which of the following plants, endosperm persists in the mature seed?

1. Beans
2. Pea
3. Castor
4. Groundnut

Q. Which type of endosperm does the coconut water represent?

1. Nuclear type
2. Cellular type
3. Helobial type
4. It does not represent Endosperm

Q.

Ex-albuminous (or) non-endospermic seeds do not consume endosperm during embryo development.

1. True

2. False

Q. The sheath enclosing radicle and plumule respectively in monocot seeds are

1. Coleorhiza and coleoptile
2. Scutellum and epiblast
3. Aleurone layer and pericarp
4. Coleoptile and coleorhiza

Q. How many of the following seeds are ex-albuminous?
Wheat, Maize, Pea, Barley, Groundnut, Castor

1. 2
2. 3
3. 4
4. 5

Q. Describe the development of endosperm after double fertilisation in an angiosperm. Why does endosperm development precede that of zygote? [3]

Q.

How do these organisms asexually reproduce?

(a) Spirogyra, (b) Planaria.

Q.

Name the following:
The outer coat of the seed.

Q. The mature seed that do not contain residual endosperm is called

1. Perisperm
2. Non-albuminous seed
3. Albuminous seed
4. Cotyledenous seed

Q. (a) Trace the development of an endosperm after fertilisation with reference to coconut. Mention the importance of endosperm development.

(b) Write the importance of 'pollen bank'. [3]

Q. In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Plant growth regulators (PGRs) are very important for plant growth and development.
Reason: Auxins do not induce flowering in gymnosperms.

1. If both assertion and reason are false.
2. If both assertion and reason are true but reason is not the correct explanation of assertion.
   
3. If both assertion and reason are true and reason is the correct explanation of assertion.
   
4. If assertion is true but reason is false.
   

Q. List some important and most asked examples of -
1. monocots
2. dicots
3. C3 plants
4. C4 plants

Q. The point at which the funiculus touches the ovule body is

1. Placenta
2. Micropyle
3. Hilum
4. Chalaz

Q. This is not post fertilization event

1. Formation of Endosperm
2. Formation of secondary nucleus
3. Formation of Testa
4. Formation of PEN

Q.

The amount of water present in a dry mature seed is around

1. 80-95%

2. 10-15%

3. 70-90%

4. 85-90%

Q.

What are the various parts of the embryo of a dicot seed?

Q.

What Is the cotyledon of a seed?

Q.

A seed consists of

1. embryo

2. seed coat, embryo and cotyledons

3. embryo and seed coat

4. seed coat and endosperm

Q. A plant produced 50 flowers. Ovary of each flower has 50 ovules. How many fruits and seeds are produced by that plant respectively.

1. 550, 100
2. 50, 50
3. 50, 2500
4. 2500, 2500

Q. Non-endospermic seed is produced in

1. Maize
2. Castor
3. Wheat
4. Pea

Q.

The milky water in tender coconut is __ endosperm.

Q. Seeds are produced______.

1. by all plants
2. only by angiosperms
3. both by angiosperms and gymnosperms
4. by all vascular plants

Q. The coconut water from coconut represents the

1. free nuclear proembryo
2. free nuclear endosperm
3. cellular endosperm
4. fleshy mesocarp

Q.

Explain alternations of generations in detail with examples.

Q. Which of the following parts of the seed cannot store food?

1. Endosperm
2. Cotyledons
3. Nucellus
4. Seed coat