Adelphy of Stamens

Q.

Are antipodal cells and synergids haploid or diploid . how?

Q. Which of the following statements is correct?

1. Cotton, pea and Citrus exhibit cohesion of stamens
2. Calotropis and Cassia have imbricate aestivation in their corolla
3. The anterior petals in pea are called alae
4. Cucurbits and orchids show syngenesious condition

Q. The largest cell in an embryo sac is

1. central cell
2. synergid

3. antipodal cell

4. egg

Q. Diadelphous stamens are found in :

1. China rose and Citrus
2. China rose
3. Citrus
4. Pea

Q.

Which of the following parts of a plant take part in sexual reproduction? (i) Flower (ii) Seed (iii) Fruit (iv) Branch. Choose the correct answer from below.

1. (i) and (ii)

2. (i), (ii) and (iii)

3. (iii) and (iv)

4. (ii), (iii) and (iv)

Q. b) How many embryo sacs are present in an ovule?

Q.

The term 'polyadelphous' is related to

1. Corolla

2. Calyx

3. Gynoecium

4. Androecium

Q. a) How many eggs are present in an embryo sac?

Q. Stamens are in china rose and in pea flowers.

1. polyadelphous
2. diadelphous
3. monadelphous
4. triadelphous

Q. What is bilocular trilocular unilocular

Q.

What is a staminode?

Q.

What is a syngenesious condition?

Q. There are 10 flowers in a plant of Lupin. In each microsporangium of every stamen of all the flowers, there are 30 microspore mother cells. How many pollen grains are formed from a single flower of that plant?

1. 4, 800
2. 9, 600
3. 24, 000
4. 48, 000

Q.

Why do some pollen grains fail to germinate?

Q.

Mention function of carpel.

Q. Protonema:

1. is a stage of gametophytic generation.
2. produces apical bud which forms leafy plant body.
3. All of the above.
4. is creeping, green, branched and develops indirectly from a spore.

Q. When filaments of all the stamens in a flower are fused together to form a single bundle, the condition is called as

1. monandrous
2. monadelphous
3. diadelphous
4. polyadelphous

Q.

Is maize dioecious?

Q.

When pollen grain is shed at 3-celled stage, name the cells it contains.

OPTIONS​

A) 1 vegetative cell and 2 male gametes

B) 1 generative cell and 2 male gametes

Q.

What kind of division occurs in pollen grains

Q. Monocarpellary ovary, diadelphous androecium, and marginal placentation is found in

1. Cruciferae
   
2. Papilionaceae
   
3. Liliaceae
   
4. Compositae
   

Q.

Do plants reproduce asexually or sexually?

Q.

Pollen grains are male gametes.

1. True
2. False

Q. Filiform apparatus are found in

1. antipodal cell
2. egg cell
3. secondary nucleus

4. synergids

Q. Which cell has the potential to produce diploid plants?

1. Generative cell
2. Microspore
3. Vegetative cell
4. Outer wall of anther

Q. Following are well-known plants for their hallucinogenic properties. They are also used for folk medicines. Choose the odd one out

1. Morning glory
2. Marigold
3. Fly agaric
4. Datura

Q.

The opening through which male gametes enters the ovule is called

1. stigma

2. micropyle

3. style

4. ovary

Q. Assertion :Monoadelphous stamens are found in Pea.
Reason: In Pea, stamens are united into one bunch or one bundle.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q.

Stamens make egg cells.

1. True
2. False

Q.

Give one word for the following:
The swollen tip of a flower.