Sexual Reproduction in Flowering Plants Test

Result

Sexual Reproduction in Flowering Plants Test - 93

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

Polyploidy can result from?

A
Double fertilization

B
Polyspermy

C
Diploid gametes

D
All of the above
Question 2
1 / -0

Embryo in sunflower has

A
Two cotyledons

B
Many cotyledons

C
No cotyledon

D
One cotyledon

Solution

Since sunflower is a dicotyledonous plants, the number of cotyledons is two.
Question 3
1 / -0

Which of the following represent zygomorphic symmetry?

A
Canna, Mustard, Chilly, Datura

B
Mustard, Canna, Pea, Datura

C
Pea, Bean, Cassia, Gulmohar

D
Pea, Bean, Canna, Chilly
Solution
- Zygomorphic symmetry, also known as bilateral symmetry occurs in a flower through which it can pass only one plane of symmetry that will divide it into two parts.
- The Fabaceae or Leguminosae, commonly known as the legume, pea, or bean family are a large and economically important family of flowering plants which has a zygomorphic flower.
- Pea, bean, Cassia and Gulmohar belong to Fabaceae.
So, the correct answer is 'Pea, bean, Cassia, Gulmohar'.
Question 4
1 / -0

Which statement is correct for apomixis?

A
Without fertilisation diploid embryo forms

B
With fertilisation diploid embryo forms

C
Without fertilisation haploid embryo cell form embryo

D
With fertilisation haploid embryo cell form embryo
Solution
- Apomixis in flowering plants is defined as the asexual formation of a seed from the maternal tissues of the ovule, avoiding the processes of meiosis and fertilization, leading to embryo development.
- Apomixis relates to mechanisms where an embryo sac is mitotically formed from a diploid cell in the ovule, bypassing meiosis. The genetic nature of plants produced by apomictic embryos is the same as that of parents so they can be called clones.
- Hence, the mother cell is diploid, so diploid embryo forms.
- So, the correct answer is 'Without fertilisation diploid embryo forms'.
Question 5
1 / -0

Flowering in short day plants is stimulated by

A
Short Nights

B
Long day with interrupted night

C
Short day with uninterrupted long Nights

D
Short day with interrupted long Nights
Question 6
1 / -0

Which of the following is correct for above diagrams?

A
a & b represent ex-albuminous seeds

B
c & d represent albuminous seeds

C
a & b represent albuminous seeds

D
c & d represent perispermic seeds
Solution
- Albuminous seeds are the seeds which have food stored in the special nourishing tissue called endosperm that remains persistent till maturity.
- In Albuminous seeds, Cotyledons only act as food sucking organs and not food storage organs. e.g. Castor seed, coconut, and maize.
- In the given diagrams a & b represent albuminous seeds.
- So, the correct answer is 'a & b represent albuminous seeds'.
Question 7
1 / -0

Which plants die after flowering?

A
Lotus

B
Bamboo

C
Chrysanthemum

D
Butea
Question 8
1 / -0

Which of the following statements are for flowers?
(i) Flowers are always bisexual
(ii) They are sexual reproductive organs
(iii) They are produced in all groups of plants
(iv) After fertilisation they give rise to fruits

A
(i) and (iv)

B
(ii) and (iii)

C
(i) and (iii)

D
(ii) and (iv)

Solution

Some flowers are unisexual and hence statement (i) is incorrect.
Flowers are produced by angiosperms only hence statement (iii) is incorrect.
Thus, the correct answer is (D).
Question 9
1 / -0

A particular species of plant produces light, non-sticky pollen in large numbers and its stigmas are large and feathery. These modifications facilitate pollination by:

A
Insects

B
Water

C
Wind

D
Animals

Solution

$$\textbf{Correct option: (C)}$$

$$\textbf{Explanation for correct option:}$$

$$\bullet$$ Light and non-sticky pollens are easily carried away by the wind.

$$\bullet$$ Feathery stigma are able to sway with the wind which helps to trap the pollen grains transported by the wind.

$$\bullet$$ Such plants also possess well-exposed stamens (so that the pollens are easily dispersed into wind currents).

$$\bullet$$ These modifications facilitate pollination by wind which is termed as Anemophily and is common in grasses.

$$\bullet$$ Hence the correct option is (C)
Question 10
1 / -0

From among the situations given below, choose the one that prevents both autogamy and geitonogamy.

A
Monoecious plant bearing unisexual flowers.

B
Dioecious plant bearing only male or female flowers.

C
Monoecious plant with bisexual flowers.

D
Dioecious plant with bisexual flowers.

Solution

$$\textbf{Correct option:}$$ (B)

$$\textbf{Explanation for correct option:}$$

$$\bullet$$ In Autogamy, pollen is transferred from anther to stigma of the same flower. It is the only mode of pollination in cleistogamous flowers. Example: $$Viola$$

$$\bullet$$ In Geitonogamy, pollen is transferred from anther of one flower to stigma of another flower present on the same flowering plant. It is functionally a cross-pollination but genetically it is similar to autogamy since the pollen grains comes from the same plant. Example: Maize.

$$\bullet$$ In Xenogamy, pollen is transferred from anther of flower from one plant to stigma of flower of another plant. In it pollination brings genetically different types of pollens to the stigma. Example: Date palm, papaya, cucurbits etc.

$$\bullet$$ In dioecious plants as male and female flowers are situated separately on different plants. In such plants, the mode of pollination followed is termed as Xenogamy.

$$\bullet$$ Thus, dioecious plant bearing only male or female flowers prevent both Autogamy and Geitonogamy.

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 - 93

Result

Sexual Reproduction in Flowering Plants Test - 93

Score

-

Rank

-

SHARING IS CARING

Question 1

Double fertilization

Polyspermy

Diploid gametes

All of the above

Question 2

Two cotyledons

Many cotyledons

No cotyledon

One cotyledon

Solution

Question 3

Canna, Mustard, Chilly, Datura

Mustard, Canna, Pea, Datura

Pea, Bean, Cassia, Gulmohar

Pea, Bean, Canna, Chilly

Solution

Question 4

Without fertilisation diploid embryo forms

With fertilisation diploid embryo forms

Without fertilisation haploid embryo cell form embryo

With fertilisation haploid embryo cell form embryo

Solution

Question 5

Short Nights

Long day with interrupted night

Short day with uninterrupted long Nights

Short day with interrupted long Nights

Question 6

a & b represent ex-albuminous seeds

c & d represent albuminous seeds

a & b represent albuminous seeds

c & d represent perispermic seeds

Solution

Question 7

Lotus

Bamboo

Chrysanthemum

Butea

Question 8

(i) and (iv)

(ii) and (iii)

(i) and (iii)

(ii) and (iv)

Solution

Question 9

Insects

Water

Wind

Animals

Solution

Question 10

Monoecious plant bearing unisexual flowers.

Dioecious plant bearing only male or female flowers.

Monoecious plant with bisexual flowers.

Dioecious plant with bisexual flowers.

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.