Sexual Reproduction in Flowering Plants Test

Result

Sexual Reproduction in Flowering Plants Test - 85

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

Formation of propagules on floral branches, either in to the flowers or in the place of them, is called _________________.

A
Adventive embryony

B
Generative apospory

C
Somatic apospory

D
Vegetative vivipary

Solution

Adventive embryony is the process of embryonic development without fertilization. The embryo does not develop from the reproductive cells or the gametes. They may develop from the nucellus or integumentary cells and form structures called propagules which gets detached from parent plant to develp into a new individual.
So, the correct option is A.
Question 2
1 / -0

Ipomea batatas is propagated vegetatively by using __________.

A
Bulbs

B
Corns

C
Tubers

D
Vine cuttings

Solution

D. Vine cuttings
Ipomea batatas (sweet potato) belonging to family "Convolvulaceae" can be well propagated by choosing disease free, 5-6 inches of a healthy vine preferably with new leaves on top portion of it, cut at an angle of 45 degree at a node and growing it in a jar of water until roots start appearing. Once roots start developing, the cutting should be transplanted into a soil containing pot where it will grow into an adult plant.
Question 3
1 / -0

Consider the following fruit crops.
a. Musa
b. Malus
c. Citrus
d. Mangifera
In which of the nuclear polyembryony is known to occur commonly?

A
$$1, 2$$ and $$3$$

B
$$3$$ only

C
$$3$$ and $$4$$

D
$$1, 2$$ and $$4$$

Solution

The correct answer is B.
Nuclear polyembryony is a form of seed reproduction that occurs in certain plant species, including many citrus varieties. It is a type of seed formation in which the nuclear cells that are present in the embryo divide and form many more embryos. These are the exact clones of the parents because these are formed from nuclear cells. Nuclear polyembryony is important to the citrus industry, as it allows for the production of uniform rootstock which yields consistent results in fruit production.
Question 4
1 / -0

In view of the suicides committed by the poor farmers towards raising the commercial $$F1$$ hybrid seeds, a plant breeder wishes to supply them the hybrid seeds at a chapter cost. Which One of the following type of genetic stocks can be choose?

A
Inbred lines

B
Back-cross progeny

C
Male sterile lines

D
Pedigree lines
Question 5
1 / -0

In Oak tree, the pollination is brought about by.

A
Bats

B
Insects

C
Squirrels

D
Wind

Solution

The correct answer is D.
Pollen from oak trees is carried from flower to flower by the wind. This is called wind-pollination.
Question 6
1 / -0

Consider the following statements.
a. Orchids are monocotyledonous plants
b. Orchids have only ornamental value
c. All orchids are autotrophs
d. Some orchids are epiphytes
Which of these statements are correct?

A
$$1$$ and $$2$$

B
$$2$$ and $$3$$

C
$$1$$ and $$4$$

D
$$3$$ and $$4$$
Question 7
1 / -0

Dormancy caused by seed coat impermeability to water and gases can be broken by ______________.

A
Stratification

B
Scarification

C
Low temperature

D
Abscises acid
Question 8
1 / -0

Which of the following statements is not correct?

A
In corn, the mature seed is exalbuminous

B
In orchids, the embryo has no cotyledons

C
In corn, the embryo contains young leaves while in the seed

D
In peach, the fruit is drupe

Solution

The correct answer is A.
In corn,the mature seed is albuminous as it store food materials in their endosperm.
Question 9
1 / -0

Polyembryony is a predominant feature in the species of ____________.

A
$$Mangifera$$

B
$$Opunitia$$

C
$$Eugenia$$

D
$$Citrus$$
Question 10
1 / -0

Which one of the following pairs is not correctly matched?

A
Morphine-Opium poppy

B
Atropine- Black nightshade

C
Quinine- Cocoa leaves

D
Caffeine- Tea leaves
Solution
Correct Option: B and C
Explanation:
- Atropine is a medicine that is used to treat the symptoms of the low heart rate which is bradycardia, bronchial secretions, and reduce salivation before surgery,or as an antidote for overdose of cholinergic drugs or mushroom poisoning.
- Atropine is usually prepared by extraction from the plants atropa belladonna which is called deadly nightshade.
- This extracted atropine is a combination of D and L hyoscyamine.
- Quinine is a natural circhona alkaloid used in the prevention and therapy of malaria. It has no role with cocoa leaves.
Hence, the incorrect pair is Atropine-black nightshade and quinine-cocoa leaves.

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Sexual Reproduction in Flowering Plants Test - 85

Result

Sexual Reproduction in Flowering Plants Test - 85

Score

-

Rank

-

SHARING IS CARING

Question 1

Adventive embryony

Generative apospory

Somatic apospory

Vegetative vivipary

Solution

Question 2

Bulbs

Corns

Tubers

Vine cuttings

Solution

Question 3

$$1, 2$$ and $$3$$

$$3$$ only

$$3$$ and $$4$$

$$1, 2$$ and $$4$$

Solution

Question 4

Inbred lines

Back-cross progeny

Male sterile lines

Pedigree lines

Question 5

Bats

Insects

Squirrels

Wind

Solution

Question 6

$$1$$ and $$2$$

$$2$$ and $$3$$

$$1$$ and $$4$$

$$3$$ and $$4$$

Question 7

Stratification

Scarification

Low temperature

Abscises acid

Question 8

In corn, the mature seed is exalbuminous

In orchids, the embryo has no cotyledons

In corn, the embryo contains young leaves while in the seed

In peach, the fruit is drupe

Solution

Question 9

$$Mangifera$$

$$Opunitia$$

$$Eugenia$$

$$Citrus$$

Question 10

Morphine-Opium poppy

Atropine- Black nightshade

Quinine- Cocoa leaves

Caffeine- Tea leaves

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.