Autogamy

Q.

Both autogamy and geitonogamy are prevented in:

1. Castor

2. Maize

3. Papaya

4. Cucumber

Q.

What are chasmogamous and cleistogamous?

Q.

Which among the following statements are true for unisexual flowers?

(i) They possess both stamen and pistil.

(ii) They possess either stamen or pistil.

(iii) They exhibit cross-pollination.

(iv) Unisexual flowers possessing only stamens cannot produce fruits.

1. (i) and (iv)

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

3. (iii) and (iv)

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

Q.

What is the difference between monoecious and hermaphrodite?

Q. A pure breeding (true-breeding) variety means:

1. Self-pollinating plant variety showing continuous variations
2. Cross-pollinating genetically different plant variety showing inheritance of same traits every generation
3. Cross-pollinating plant variety showing continuous variations
4. Self-pollinating plant variety showing inheritance of same traits for several generations

Q. In pea plants, the dominant seed colour is ______(A)_________ and the recessive fruit colour is ________(B)________.

1. A-yellow, B-green
2. A-yellow, B-yellow
3. A-green, B-green
4. A-green, B-yellow

Q. Water pollinated plant(s) is/are:

1. Vallisneria
2. Hydrilla
3. Zostera
4. All of these

Q.

Staminate flowers contain stamens only.

1. True
2. False

Q. Flowers are highly modified

1. Leaves
2. Stem
3. Shoot
4. Root

Q. A dioecious flowering plant prevents both :

1. Autogamy and xenogamy
2. Autogamy and geitonogamy
3. Geitonogamy and xenogamy
4. Cleistogamy and xenogamy

Q.

What Is Geitonogamy and Xenogamy?

Q. Where does syngamy occur?

Q.

The sexual reproduction in Spirogyra is

1. Oogamous

2. Isogamous

3. Conjugation

4. Cleistogamous

Q.

What is an example of cross-pollination?

Q.

Difference between cleistogamy and chasmogamy?

Q. According to NCERT text, which of the following are selection and testing of superior recombination in plant breeding?

1. 
   It involves selection of plants among the progeny of the hybrids with desire combination of characters
2. 
   The hybrid are superior to both the parents this is called hybrid vigour
3. They are self-pollinated for several generations till they rich a stable of uniformly or homozygosity in order to avoid the segregation of characters in the future progeny
4. 
   All of the above

Q. Out of the following images which one is a dominant trait in a pea plant?

1. 
   Wrinkled Seed
2. 
   Green Seed
3. 
   Yellow pod
4. 
   Yellow seed

Q.

Name the following:
Two unisexual flowers: ______________.

Q.

Which Condition Makes Flowers Invariably Autogamous?

Q.

Give one term for: bisexual flower remains closed all their life so that the pollen can easily pollinate the stigma of the flower.

Q. Can a pollen grain still germinate if it deposits on the stigma of plant belonging To different species

Q. Identify the Cleistogamous flowers in Viola.

1. 
2. 
3. 

Q.

Difference between autogamy and allogamy?

Difference between wind pollinated flower and insect pollinated flower ?

What happens after fertilization in hilum part and antipodal cell and secondary nucleus ?

Q. Write ‘True’ or ‘False’ for the statement given below:
Mustard and tomato are examples of hypogynous flowers.

Q.

Identify error in the given statement:

In a unisexual flower, both male and female reproductive parts are present.

Q. A scion is grafted on a stock. Quality of fruits produced
will depend upon genotype of

1. None of the above
   
2. stock
   
3. Both A and B
4. scion
   

Q. Assertion :Chasmogamous flowers require pollinating agents. Reason: Cleistogamous flowers do not expose their sex organs.

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. State one advantage and one disadvantage of cleistogamy.

Q. (a) How does cleistogamy ensure autogamy?
(b) State one advantage and one disadvantage of cleistogamy to the plant.

Q.

Where can the condition of oogamous be seen?