Different Types of Arrangement of Stamens

Q. Identify the correct features of mango and coconut fruits.
(i) In both fruit is a drupe
(ii) Endocarp is edible in both
(iii) Mesocarp in coconut is fibrous, and in mango it is fleshy
(iv) In both, fruit develops from monocarpellary ovary

Select the correct option from below:

1. (i), (iii) and (iv) only
2. (i), (ii) and (iii) only
3. (i) and (iv) only
4. (i) and (ii) only

Q.

What are the various modes of fixation of filament to the anther?

Q.

Describe valved and twisted aestivation.

Q.

Ray florets have?

1. Half ovary

2. No ovary

3. Superior ovary

4. Inferior ovary

Q. In monoadelphous condition, stamens have

1. filaments of all united in one group but anthers are free
2. filaments united in groups but all anthers are free
3. anthers are fused but filaments are free
4. both anthers and filaments are fused

Q.

Explain imbricate aestivation?

Q.

What is syncarpous ovary?

Q. Synandrous condition is the fusion of

1. filaments only
2. filaments and anthers
3. anthers only
4. petals

Q.

Where can epipetalous condition of the stamen be seen?

Q.

What is pseudocopulation mechanism?

Q.

What is it called when the stamens are attached to the petals?

Q. Ovule integuments gets transformed into

1. Fruit wall
2. Cotyledon
3. Seed
4. Seed coat

Q. Tetradynamous condition is seen in _________.

1. potato family
2. lily family
3. mustard family
4. cotton family

Q.

Is maize a flowering plant?

Q. Which among the following are the correct symbols for epiphyllous condition?

1. $K_3{A}_3$
2. $C_3{A}_3$
3. $K_3{C}_3$
4. $\stackrel{⌢}{PA}$

Q. Which of the following statements are true?
I : All complete flowers are bisexual
II : All bisexual flowers are complete
III : Achlamydeous flowers are incomplete

1. I & II
2. II & III
3. I & III
4. Only I

Q. What is the condition where the stamens of a flower are attached to the perianth?

1. Epipetalous
2. Monadelphous
3. Epiphyllous
4. Staminode

Q. How many plants among Indigofera, Sesbania, Salvia, Allium, Aloe, mustard, groundnut, radish, gram and turnip have stamens with different lengths in their flowers?

1. Four
2. Five
3. Six
4. Three

Q. In mango, the pericarp is well differentiated into an outer _____ epicarp, a middle ______ mesocarp and an inner _____ endocarp.

1. thin; fleshy; hard
2. fleshy; hard; thin
3. hard; fleshy; thin
4. thin; hard; fleshy

Q.

Why are floral features used for the identification of angiosperms?

Q.

Why are fruits different colors?

Q.

Distinguish between the following pair:

Polyandraus and Polyadephous androecium

Q.

An example of Liliaceae family is______.

1. Lupin.

2. Petunia.

3. Tulip.

4. Soybean.

Q. Synandrous condition is the fusion of

1. filaments only
2. filaments and anthers
3. anthers only
4. petals

Q. What is the liquid part of green coconut?

1. Endosperm
2. Female gametophyte
3. Nucellus
4. Embryo

Q.

Androphore is lightly differentiated in the flower of

1. Salvia

2. Calycanthus

3. Passiflora

4. Rafflesia

Q. The condition where filaments and anthers are fused throughout the entire length is

1. Synandrous
2. Gynandrous
3. Protandrous
4. Syngenesious

Q. Which among the following have flowers with six stamens of unequal length, of which, two are short and four are long?

1. Ocimum
2. Salvia
3. Brassica
4. Acanthus

Q. On touching the leaves of Mimosa pudica, it droop down because of

1. Seismonasty
2. Hydrotropism
3. Chemonasty
4. Thigmotropism

Q. Why do moss plants produce very large number of male gametes? Give one reason. What are these gametes called? [2]