Q. No.How many of the given options are correct?
Column I Column II
a. Pollen kitt Sticky pollen
b. Callase enzyme Secreted by endothecium
c. Polyploid layer of anther wall Tapetum
d. Pollen allergy Parthenium
1. Two 2. Three
3. Four 4. One
Column I Column II
a. Pollen kitt Sticky pollen
b. Callase enzyme Secreted by endothecium
c. Polyploid layer of anther wall Tapetum
d. Pollen allergy Parthenium
3. Four 4. One
Gynoecium of Michelia and Papaver is similar in being
(1) Apocarpous
(2) Syncarpous
(3) Monocarpellary
(4) Polycarpellary
Flowers of which of the following plants should be pollinated within half an hour for successful seed formation after anther dehiscence?
(1) Pea
(2) Potato
(3) Rice
(4) Bean
Match the column with respect to pollen grain:
|
|
Column I |
|
Column II |
|
a) |
Vegetative Cell Nucleus |
(i) |
Abundant Reserve Food & Irregular Nucleus |
|
b) |
Germ Pore |
(ii) |
Spindle shaped with dense cytoplasm |
|
c) |
Exine |
(iii) |
Where the Sporopollenin is absent |
|
|
|
(iv) |
Variable Pattern & design |
|
|
|
(v) |
Continuous layer made up of Cellulose & pectin |
(1) a(iv), b(v), c(iii)
(2) a(i), b(iii), c(v)
(3) a(i), b(iii), c(iv)
(4) a(iv), b(i), c(iii)
Tapetum is:
(1) Group of compactly arranged polyploidy cells in centre of anther
(2) Innermost wall layer which nourishes megaspore mother cells
(3) The cells with more nucleus that do not help in dehiscence
(4) Protecting, multilayered, cells with dense cytoplasm in surrounding of sporogenous mass
Which of the following points is incorrect about sporopollenin?
(1) It is one of the most resistant organic material known
(2) It can withstand high temperature and strong acids and alkali
(3) 2 enzymes that degrade sporopollenin are known so far
(4) Pollen grains are well preserved as fossils because of presence of sporopollenin
Which of the following statement is not associated with phenomenon of flowering?
(1) Decision for flowering takes place much before actual flower appears.
(2) During flowering several structural and hormonal changes takes place
(3) During flowering differentiation takes place
(4) Flowering is independent of environmental factors
A typical angiosperm anther is bilobed with each lobe having two theca i.e. dithecous. Theca is separated often by:
(1) A longitudinal groove running lengthwise
(2) A longitudinal groove running breadth wise
(3) A transverse groove running breadth wise
(4) A transverse groove running lengthwise
Following are four statements how many of them are correct?
a. The anther is a tetragonal structure, with four microsporangia at corners, two in each lobe.
b. Microsporangia develops further and becomes pollen sacs.
c. A typical microsporangia is surrounded by four-layered wall, 3-protective and 1 nutritional.
d. The nutritive layer is densely cytoplasmic and with more than one nucleus
Options :
1. 3 2. 4
3. 2 4. 1
When anther is young a group of compactly arranged homogenous cells are present in centre it is known as
(1) Sporogenous tissue
(2) Potential pollen mother cell
(3) Both 1 and 2
(4) Conjunctive tissue
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