Structure of a Dicot Seed

Q.

Persistent nucellus in the seed is known as:

1. Tegmen

2. Chalaza

3. Perisperm

4. Hilum

Q. Which of the following pairs has/have same ploidy in a typical angiospermic plant?
a. Pollen grain and anther
b. Male gamete and pollen grain
c. Seed and endosperm
d. Embryo sac and ovule

1. a and c
2. b and d
3. b only
4. b, c and d

Q. Which of the following monocotyledonous seed is non-endospermic?

Q.

Give two examples of each of the following:

Fleshy fruits.

Q. Pick the odd one out. (Based on the type of the fruit.)

1. Mango
2. Apple
3. Coconut
4. Watermelon

Q.

The annular and spirally thickened conducting elements generally develop in the protoxylem when the root or stem is?

1. maturing

2. differentiating

3. widening

4. elongating

Q.

In an exalbuminous seed

1. The endosperm is formed prior to fertilization

2. The endosperm is formed after fertilization and the mature seed lacks endosperm

3. The mature seed contains endosperm

4. Endosperm formation itself is absent

Q.

Which of these is a dicot seed with endosperm?

1. Orchid

2. Castor

3. Pea

4. Sorghum

Q.

The mature seeds of plants such as gram and peas possess no endosperm, because

(a) these plants are not angiosperms

(b) there is no double fertilisation in them

(c) endosperm is not formed in them

(d) endosperm gets used by the developing embryo during seed development

Q. Name the part of the seed that provides nutrition for the growing dicot seedling.

1. Micropyle
2. Plumule
3. Aleurone layer
4. Cotyledon

Q.

In which of the following fruits is the edible part is the aril?

1. Apple

2. Peach

3. Litchi

4. Orange

Q. Assertion: In a dicotyledonous embryo, the portion of embryonal axis above the level of cotyledons is the epicotyl and the portion below the level of cotyledons is hypocotyl.

Reason: The epicotyl terminates with radicle or root tip and hypocotyl terminates with plumule or shoot tip.

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

Q. Identify the A, B, C, D, E and F in given figure -

1. A- Endosperm, B – Seed coat, C – Cotyledon, D – Shoot apical meristem, E – Root tip, F – Hypocotyl root axis
2. A- Seed coat, B – Endosperm, C – Cotyledon, D – Shoot apical meristem, E – Root tip, F – Hypocotyl root axis
   
   
3. A- Endosperm, B – Seed coat, C – Cotyledon, D – Shoot apical meristem, E – Hypocotyl root axis, F – Root tip
4. A- Seed coat, B – Hypocotyl root axis, C – Shoot apical meristem, D – Cotyledon, E – Root tip, F – Endosperm
   

Q. What is a false fruit ? Give one example.

Q.

Is rice an endospermic seed?

Q.

The term 'totipotency' refers to the capacity of a

1. Cell to generate a whole plant

2. Cell to enlarge in size

3. Seed to germinate

4. Bud to generate a whole plant

Q. Dicot seed consists of

1. only radicle and plumule.
2. only radicle, plumule and endosperm
3. only radicle and cotyledons.
4. radicle, plumule, cotyledons and sometimes endosperm.

Q.

Which of the following is not a characteristic of hypogeal germination?

1. In hypogeal germination the cotyledons are not pushed above the ground.

2. The epicotyl is the upper portion of the axis of the seedling.

3. Pea, mango, and rice are the examples of hypogeal germination.

4. The portion between the cotyledons and the radicle is known as hypocotyl.

Q. Trace the development of polyploidal cell that is formed after double fertilisation in a nonalbuminous seed and albuminous seed.

Q. Which one is a true fruit?

1. Strawberry
2. Apple
3. Mango
4. Cashew nut

Q.

Does salt help seed germination?

Q. Which is essential for the growth of root tip ?

1. Mn
2. Zn
3. Fe
4. Ca

Q. The function of cotyledons in dicots is to

1. protect the seed
2. help in respiration
3. store food for the embryo
4. absorb water for the seed

Q. $Cycas$ possesses two cotyledons but is not dicot because of

Q. You are given a fairly old piece of dicot stem and a dicot root. Which of the following anatomical structures will your use to distinguish between the two?

1. Secondary xylem
2. Secondary phloem
3. Protoxylem
4. Cortical cells

Q. Which of the following can be termed as false fruits?

1. Fruits that develop only from the ovary.
2. Parthenocarpic fruits.
3. Fruits that develop from other floral parts including ovary.
4. Fruits that have no seeds.

Q. The fleshy edible part of an apple is :

1. Endosperm
2. Ovary
3. Thalamus
4. Nucellus

Q. Food storing structures in a seed are
I. Perisperm II. Endosperm III.Cotyledons IV. Hypocotyl

1. I, II
2. II, III
3. I, II, III
4. All

Q. The scientific name of black mustard is

1. Brassica rapa
2. Brassica juncea
3. Brassica campestris
4. Brassica nigra

Q. Edible part in sorosis fruit is :

1. Placenta
2. Perianth
3. Perianth $+$ sepals
4. Perianth $+$ Placenta