Pollen Pistil Interaction

Q. Pollen tube always enter the female gametophyte through the .

1. chalaza
2. integuments
3. micropyle
4. synergids

Q. Which of the following statements is not correct?

1. Pollen grains of many species can germinate on the stigma of a flower, but only one pollen tube of the same species grows into the style.
2. Insects that consume pollen or nectar without bringing about pollination are called pollen nectar ⁄ robbers.
3. Pollen germination and pollen tube growth are regulated by chemical components of pollen interacting with those of the pistil.
4. Some reptiles have also been reported as pollinators in some plant species.

Q. The part of gynoecium that determines the compatible nature of pollen is______.

1. stigma
2. style
3. ovary
4. synergids

Q.

The acceptance or rejection of pollen is based on the biochemical interactions between the components of the pollen wall and pistil head.

1. True

2. False

Q.

What is the cell:nuclei ratio in the given image of a germinating pollen?

1. 4:2

2. 3:2

3. 2:1

4. 1:2

Q. In angiosperms pollen tube can liberate their male gametes into the ___.

1. central cell
2. antipodal cells
3. egg cell
4. synergids

Q. Pollen tube always enter the female gametophyte through the .

1. chalaza
2. integuments
3. micropyle
4. synergids

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 (कॉलम)-I		Column (कॉलम)-II
(A)	Bisexual flower द्विलिंगी पुष्प	(P)	Outbreeding device बहिःप्रजनन युक्ति है
(B)	Dioecy डाइओसी	(Q)	Commelina कोमेलीना
(C)	Cleistogamy अनुन्मील्य परागण	(R)	Causes inbreeding depression अंतःप्रजनन अवनमन होता है
(D)	Chasmogamous flower उन्मीलपरागणी पुष्प	(S)	Papaya पपीता

1. A-PQS, B-QR, C-PS, D-QR
2. A-QR, B-PS, C-QR, D-PQS
3. A-PQR, B-QS, C-RS, D-PQRS
4. A-S, B-QR, C-PS, D-RS

Q. The part of gynoecium that determines the compatible nature of pollen is______.

1. stigma
2. style
3. ovary
4. synergids