Chalazogamy

Q. Entry of pollen tube through the chalazal end is called

1. Porogamy
2. Mesogamy
3. Chalazogamy
4. Syngamy

Q. Chalazogamy is seen in which of the following?

1. Casuarina
2. Lily
3. Cucurbita
4. None of these

Q.

Pick the odd one out

1. Mesogamy

2. Allogamy

3. Chalazogamy

4. Porogamy

Q. When the pollen tube enters through the funiculus or the integument it is called

1. porogamy
2. chalazogamy
3. mesogamy
4. isogamy

Q. Chalazogamy is characteristics of

1. Casuarina
2. Betula
3. Cucurbita
4. Both (A) and (B)

Q. The given diagram shows a section through the ovary and pollen tube of a flowering plant just before fertilization plant just before fertilization. After the fertilization the structures that convert into peticarp and seed coat are respectively -

Q. Entry of pollen tube through the chalazal end is called

1. Porogamy
2. Mesogamy
3. Chalazogamy
4. Syngamy

Q. When the pollen tube enters the ovule through the integuments, the phenomenon is known as.

1. Isogamy
2. Porogamy
3. Mesogamy
4. Chalazogamy

Q. Identify the correct pair of statements.
(I) The filiform apparatus helps in absorption of food.
(II) Antipodals are the vegetative cells of female gametophyte.
(III) The fusion of two polar nuclei and male gamete occurs always before the entry of pollen tube.
(IV) The largest cell of embryosac is the egg cell.
The correct pair is

1. (I), (II)
2. (II), (III)
3. (I), (IV)
4. (III), (IV)

Q. Chalazogamy is seen in which of the following?

1. Casuarina
2. Lily
3. Cucurbita
4. None of these

Q. Secondary nucleus present in the middle of embryo sac is ....................

1. Tetraploid
2. Triploid
3. Diploid
4. Haploid

Q. What happens to the following after fertilization?
Petals

Q. A pollen tube enters the ovule through chalaza lying opposite the micropyle. It will enter the embryo sac through.

1. Chalazal end
2. Antipodal haustorium
3. Laterally
4. Micropylar end

Q. The tenuinucellate ovule has.

1. Small amount of nucellus
2. Micropylar nucellus
3. Large amount of nucellus
4. Chalazal nucellus

Q. Double fertilization is an exclusive feature found in flowering plants.
Based on the course of the growth of pollen tube and entry into the ovule which one of the following is known as misogamy?

1. Entry of pollen tube through the micropyle into the ovule
2. Entry of pollen tube through the plancenta and the funiculus
3. Entry of pollen tube through the integuments
4. Entry of pollen tube through the funiculus and chalaza into the embryo sac from the egg apparatus end