Reproduction in Organisms Test

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Reproduction in Organisms Test - 69

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following cannot be seen during estrus cycle?

A
Estrogen produces strong sex surge

B
Menstruation at the end of the estrous cycle

C
Ovulation takes place during estrus phase

D
None of the above
Solution
- Animals that have estrus cycles resorb the endometrium if conception does not occur during that cycle.
- Animals that have menstrual cycles shed the endometrium through menstruation if conception does not take place.
- So, the correct option is 'Menstruation at the end of the estrus cycle'.
Question 2
1 / -0

Which of the following statement can be related to metestrus phase of an estrus cycle?

A
The hypertrophy of glands of uterine mucosa

B
Corpus luteum develops

C
In absence of fertilisation the corpus luteum degenerates

D
All of the above
Solution
- Metestrus phase is characterized by the activity of the corpus luteum, which produces progesterone.
- The uterine lining begins to appear and hypertrophy of glands is observed due to increased progesterone.
- Just like menstrual cycle, absence of fertilisation leads to degeneration of corpus luteum in estrus cycle.
- So, the correct option is 'All of the above'.
Question 3
1 / -0

Potatoes is(underground) stem becasue it

A
Possesses axillary buds(eyes)

B
Lacks chlorophyll

C
Does not bear roots

D
Contains reserve food
Question 4
1 / -0

Edible part of Ginger is

A
Corm

B
Rhizome

C
Bulb

D
Tuber
Question 5
1 / -0

Select the wrong statement :

A
Chlamydomonas exhibits both isogamy and anisogamy and Fucus shows oogamy.

B
Isogametes are similar in structure, function and behaviour.

C
Anisogametes differ either in structure, function or behaciour.

D
In oomycetes, female gamete is smaller and motile while male gamete is larger and non-motile.
Question 6
1 / -0

Salamandra atra is

A
Ovoviviparous

B
Oviparous

C
Sexually sterile

D
Parthenogenetic

Solution

Ovoviviparous is the method of reproduction in which animals produce eggs, but instead of laying the eggs, the eggs develop within the mother's body. The eggs hatch within the mother. After hatching, they remain inside the mother for a time and are nourished there.
In salmonella atra, offspring after hatching undergoes metamorphosis inside the body of the mother. Offspring is delivered after complete metamorphosis. This is why they have a gestation period of two-four years.
So, the correct option is 'Ovoviviparous'.
Question 7
1 / -0

Corm is characterised by

A
Adventitious roots

B
Axillary buds

C
Circular nodes

D
Perennial nature
Question 8
1 / -0

In oogamous reproduction,

A
Both male and female gametes are motile

B
Both gametes are product of division of protoplast

C
Both male and female gametes are non-motile

D
For male gametes protoplast divides but for female gamete it does not
Solution
- Oogamy is a system of sexual reproduction in which one gamete (called the egg) is large and nonmotile, while the other (called the sperm) is small and motile. Oogamy is a type of Anisogamy.
- During Spermatogenesis, the protoplast of spermatogonium is equally divided into 4 spermatids while during oogenesis, ovum retains the bulk of protoplast and is minimally shared by Polar bodies.
So, the correct option is 'For male gametes protoplast divides but for female gamete it does not'.
Question 9
1 / -0

Fusion between a larger non-motile (static) female gamete and smaller motile male gamete is

A
Isogamous

B
Oogamous

C
Anisogamous

D
Homogamous

Solution

Isogamy is the fusion of gametes that are similar in similar sizes. Anisogamy involves fusion of gametes that are dissimilar in sizes where both gametes are either motile or immobile.
In oogamy, female gamete is static while male gamete is small and motile.
So, the correct option is 'Oogamous'.
Question 10
1 / -0

Ginger multiplies vegetatively by

A
Bud

B
Stem

C
Tuber

D
Rhizome

Solution

Ginger reproduces by Rhizome
It is a underground stem modification
It is fleshy, non-green underground stem. It has distinct nodes and internodes. The nodes bear dry scale leaves with axillary buds.
Thus, option "D" is correct.

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Reproduction in Organisms Test - 69

Result

Reproduction in Organisms Test - 69

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SHARING IS CARING

Question 1

Estrogen produces strong sex surge

Menstruation at the end of the estrous cycle

Ovulation takes place during estrus phase

None of the above

Solution

Question 2

The hypertrophy of glands of uterine mucosa

Corpus luteum develops

In absence of fertilisation the corpus luteum degenerates

All of the above

Solution

Question 3

Possesses axillary buds(eyes)

Lacks chlorophyll

Does not bear roots

Contains reserve food

Question 4

Corm

Rhizome

Bulb

Tuber

Question 5

Chlamydomonas exhibits both isogamy and anisogamy and Fucus shows oogamy.

Isogametes are similar in structure, function and behaviour.

Anisogametes differ either in structure, function or behaciour.

In oomycetes, female gamete is smaller and motile while male gamete is larger and non-motile.

Question 6

Ovoviviparous

Oviparous

Sexually sterile

Parthenogenetic

Solution

Question 7

Adventitious roots

Axillary buds

Circular nodes

Perennial nature

Question 8

Both male and female gametes are motile

Both gametes are product of division of protoplast

Both male and female gametes are non-motile

For male gametes protoplast divides but for female gamete it does not

Solution

Question 9

Isogamous

Oogamous

Anisogamous

Homogamous

Solution

Question 10

Bud

Stem

Tuber

Rhizome

Solution

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