Bisexual and Unisexual Flowers

Q.

Pick out the odd one from group-1 to make it “bisexual flower producing”plants and one from group-2 to make it “unisexual flower producing”plants

Group-1 – Hibiscus, mustard, sunflower, cucumber, lily

Grop-2 – Papaya, watermelon, corn, muskmelon, gulmoher

1. 1- cucumber , 2 -gulmoher

2. 1- mustard, 2- papaya

3. 1- hibiscus, 2 -watermelon

4. 1- lily, 2- muskmelon

Q. Flowers in which only one set of essential organ is present are said to be

1. Monoecious
2. Unisexual
3. Polygamous
4. Bisexual

Q.

The arrangement of flowers on a main axis is termed as__________

1. Pulvinus

2. Phyllotaxy

3. Inflorescence

4. Morphology

Q. Distinguish between unisexual and bisexual flowers.

Q.

A flower having both the reproductive structures is called _______.

1. bisexual flower

2. unisexual flower

3. complete flower

4. incomplete flower

Q. What are bisexual and unisexual flowers? Explain.

Q.

Is maize a monoecious plant?

Q. Assertion :Unisexual flower are either staminate flowers of pistillate flower. Reason: Both monoecious and dioecious plants have unisexual flowers.

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. Which among the following statements are true for uni-sexual flowers?
(i) They possess both stamen and pistil.
(ii) They possess either stamen or pistil.
(iii) They exhibit cross pollination.
(iv) Uni-sexual flowers possessing only stamens cannot produce fruits.

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

Q. Flowers in which only one set of essential organ is present are said to be

1. Monoecious
2. Unisexual
3. Polygamous
4. Bisexual

Q.

Which among the following statements are true for unisexual flowers?

1. They always possess stamen and pistil
2. they possess either stamen or pistil
3. they show cross pollination
4. 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.

This section contains 1 Matrix Match type question, which has 2 Columns (Column I and Column II). Column I has four entries (A), (B), (C) and (D), Column II has four entries (P), (Q), (R) and (S). Match the entries in Column I with the entries in Column II. Each entry in Column I may match with one or more entries in Column II.

इस खण्ड में 1 मैट्रिक्स मिलान प्रकार का प्रश्न है, जिसमें 2 कॉलम (कॉलम I तथा कॉलम II) हैं। कॉलम I में चार प्रविष्टियाँ (A), (B), (C) तथा (D) हैं, कॉलम II में चार प्रविष्टियाँ (P), (Q), (R) तथा (S) हैं। कॉलम I में दी गयी प्रविष्टियों का मिलान कॉलम II में दी गयी प्रविष्टियों के साथ कीजिए। कॉलम I में दी गयी प्रत्येक प्रविष्टि का मिलान कॉलमII में दी गयी एक या अधिक प्रविष्टियों के साथ हो सकता है।

Match the Columns and choose the appropriate answer

कॉलमों का मिलान करें और सही उत्तर चुनें

	Column-I कॉलम-I		Column-II कॉलम-II
(A)	China rose गुड़हल	(P)	Axile placentation स्तंभीय बीजांडन्यास
(B)	Pea मटर	(Q)	Epipetalous stamens दललग्न पुंकेसर
(C)	Tomato टमाटर	(R)	Hypogynous flower अधोजायांगी पुष्प
(D)	Lily लिली	(S)	Diadelphous stamens द्विसंघी पुंकेसर

1. A-PR, B-RS, C-PQR, D-PR
2. A-P, B-R, C-PQR, D-PR
3. A-PQR, B-PRS, C-PQR, D-PRS
4. A-RS, B-PR, C-PQR, D-PQRS

Q.

Define the term “pistillate flower”

Q.

Flowers in which only one set of reproductive organ is present are said to be________

1. Bisexual

2. Monoecious

3. Unisexual

4. Polygamous

Q.

This section contains 1 Matrix Match type question, which has 2 Columns (Column I and Column II). Column I has four entries (A), (B), (C) and (D), Column II has four entries (P), (Q), (R) and (S). Match the entries in Column I with the entries in Column II. Each entry in Column I may match with one or more entries in Column II.
इस खण्ड में 1 मैट्रिक्स मिलान प्रकार का प्रश्न है, जिसमें 2 कॉलम (कॉलम I तथा कॉलम II) हैं। कॉलम I में चार प्रविष्टियाँ (A), (B), (C) तथा (D) हैं, कॉलम II में चार प्रविष्टियाँ (P), (Q), (R) तथा (S) हैं। कॉलम I में दी गयी प्रविष्टियों का मिलान कॉलम II में दी गयी प्रविष्टियों के साथ कीजिए। कॉलम I में दी गयी प्रत्येक प्रविष्टि का मिलान कॉलम II में दी गयी एक या अधिक प्रविष्टियों के साथ हो सकता है।

Match the Columns and choose the appropriate answer

कॉलमों का मिलान करें और सही उत्तर चुनें

	Column-I कॉलम-I		Column-II कॉलम-II
(A)	Tomato टमाटर	(P)	Actinomorphic flower त्रिज्यसममित पुष्प है
(B)	Petunia पेटुनिया	(Q)	Hypogynous flower अधोजायांगी पुष्प है
(C)	Lily लिली	(R)	Axile placentation स्तंभीय बीजांडन्यास होता है
(D)	Asparagus एस्पेरेगस	(S)	Endospermous seed भू्रणपोषी बीज होता है

1. A-PQRS, B-PQRS, C-PQRS, D-PQRS
2. A-RS, B-PQRS, C-PQRS, D-PQ
3. A-PQ, B-PQRS, C-RS, D-PQRS
4. A-PRS, B-PQRS, C-PQR, D-PQS

Q. Ovules of a flower are present in the
(a) stamen
(b) pedicel
(c) ovary
(d) style

Q. Identify the bisexual flower.

1. Papaya
2. Cucumber
3. China rose
4. Maize

Q. Unisexual flowers carry out self pollination.

1. True
2. False

Q. Identify the bisexual flower.

1. China rose
2. Maize
3. Papaya
4. Cucumber

Q. Bisexual flowers have either androecium or gynoecium.

1. False
2. True

Q. Flowers which have either male or female parts are called .

1. bisexual
2. unisexual
3. polygamous

Q.

A flower with both androecium and gynoecium is known as

1. dioecious

2. monoecious

3. bisexual

4. dithecous

Q.

The flowers in which either androecium or gynoecium is absent are called:

1. incomplete flowers

2. complete flowers

3. perfect flowers

4. unisexual flowers

Q.

The flowers in which both male and female reproductive structures are absent are called _________.

1. incomplete flowers

2. complete flowers

3. perfect flowers

4. neuter flowers