Which of the following is incorrect regarding seeds in angiosperms?

1. Mature seeds of peas and ground nuts are ex-albuminous.
2. Perisperm is seen in the mature seeds of black pepper and beet.
3. Dormant seeds have relatively higher moisture content than germinating seeds.
4. As ovules mature into seeds, the ovary develops into a fruit.

Subtopic:  Seed |
 84%
From NCERT
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Filiform apparatus is associated with _____ and helps in _____________.
1. Syngergids; Nourishment of egg cells
2. Synergids; Guiding the pollen tube
3. Antipodals; Nourishment of egg cells
4. Antipodals; Guiding the pollen tube

Subtopic:  Pistil: Female Gametophyte |
 93%
From NCERT
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The pollen tube releases the two male gametes first into:
1. The vicinity of the egg cell.
2. The vicinity of polar nuclei.
3. In the cytoplasm of synergids.
4. In the cytoplasm of antipodals.

Subtopic:  Double Fertilization |
 82%
From NCERT
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Cleistogamous flowers are:

1.Mostly autogamous2.Invariably autogamous
3.Mostly xenogamous4.Invariably xenogamous

Subtopic:  Pollination & Outbreeding Devices |
 68%
From NCERT
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Match each item in Column I with one item in Column II and chose your answer from the codes given below. 

Column I

(pollination)

Column II

(example)

I. Anemophily 1. Zostera
II. Hydrophily 2. Maize
III. Ornithophily 3. Kigelia
IV. Chirepterophily 4. Butea monosperma


Codes:

Options: I II III IV
1. 1     3     4
2. 2    1      4     3
3.  2   4
4. 1 2     3

             

Subtopic:  Pollination & Outbreeding Devices |
 63%
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Perisperm differs from endosperm in:

1. having no reserved food.
2. being a diploid tissue.
3. its formation by fusion of a secondary nucleus with several sperms.
4. being a haploid tissue.
Subtopic:  Endosperm | Seed |
 63%
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When a plant grows from an embryo, the embryonic organ that persists for the entire life of the plant is:

1. cotyledon 2. hypocotyl
3. suspensor 4. seed coat
Subtopic:  Embryo |
From NCERT
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In a type of apomixis known as adventive embryony, embryos develop directly from:
1. Nucellus or integument
2. Zygote
3. Synergids of antipodals of embryo sac
4. Accessory embryo sac in the ovule

Subtopic:  Apomixis & Polyembryony |
 72%
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How many cells of the female gametophyte are surrounded by a cell wall and are organized into cells?

1.62.7
3.84.2

Subtopic:  Pistil: Female Gametophyte |
 57%
From NCERT
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Identify the incorrectly matched pair:

Cell    Ploidy
1. Cells of nucellus           Diploid
2. Megaspore mother cell      Haploid
3. Functional megaspore    Haploid
4. Cells of female gametophyte    haploid
Subtopic:  Pistil: Ovule | Pistil: Female Gametophyte |
 84%
From NCERT
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