Introduction to Angiosperms

Q. Which is applicable to angiosperms?
i) Bear seeds enclosed in fruits
ii) Bear flowers
iii) Non-motile gametes
iv) Morphologically dissimilar gametes

1. Both i and ii
2. i, ii and iii
   
3. i, ii, and iv
4. All of the above

Q.

Brief about the colour feature exhibited by entomophilous flowers.

Q.

Which plants have only one cotyledon?

Q.

Plants that bear naked seeds.

Q.

The most resistant organic material present in the exine of pollen grains is:

1. Cuticle

2. Suberin

3. Sporopollenin

4. Dipicolinic acid

Q.

The end products of sexual reproduction in Phanerogamae are -

1. Flowers

2. Fruits

3. Seeds

4. Both B and C

Q. The pioneer community in hydrarch succession is:

1. Phytoplanktons
2. Bryophytes
3. Lichens
4. Ferns

Q.

Who is the father of plant morphology?

Q.

Where do Gymnosperm seeds germinate?

Q. Which of the following physiological effect is caused by gibberellins in plants?

1. Shortening of internodes
2. Chlorophyll preservation
3. Femaleness in plants
4. Maleness in plants

Q.

Transfer of pollen from anther to stigma of different flower on another plant is called:

1. Autogamy

2. Geitonomgamy

3. Xenogamy

4. Dicliny

Q.

Maize grain has a large endosperm.

1. True
2. False

Q.

Double fertilization is exhibited by:

1. Algae

2. Fungi

3. Angiosperms

4. Gymnosperms

Q.

Which of the following is not a part of ovule?

1. Hilum

2. Chalaza

3. Germ pore

4. Funicle

Q. Write any four differences between external fertilization and internal fertilization.

Q. Which is applicable to angiosperms?
i) Bear seeds enclosed in fruits
ii) Bear flowers
iii) Non-motile gametes
iv) Morphologically dissimilar gametes

1. Both i and ii
2. i, ii and iii
   
3. i, ii, and iv
4. All of the above

Q.

Anemophilous flowers do not have:

1. Scent and nectar

2. Dry and light pollen grains

3. Long filaments

4. Feathery stigma

Q.

Do angiosperms have sperms?

Q.

Male gametes in angiosperms are formed by the division of

1. Generative cell

2. Microspore

3. Vegetative cell

4. Microspore mother cell

Q.

Polyembryony commonly occurs in:

1. Citrus

2. Turmeric

3. Potato

4. Tomato

Q. Number of prothallial cells present in male gametophyte of flowering plant is?

1. Three
2. Two
3. One
4. Zero

Q.

Double fertilization is exhibited by:

1. Angiosperms

2. Fungi

3. Gymnosperms

4. Algae

Q. Who discovered double fertilization in angiosperm plants?

Q. Double fertilization was discovered by Nawaschin in .................

1. Pisum and Carica
2. Lillium and Fritillaria
3. Mangifera and Saccharum
4. Brassica and Iberis

Q. Cats may possess a mutation resulting in polydactyly, a condition resulting in extra toes. Ernest Hemingway was once given a six-toed cat as a gift. That cat's descendants now live at the Ernest Hemingway home and museum on key west. More than half of the Hemingway house cats now have polydactyly.
This is a much higher frequency than in the general housecat population, making the situation an example of

1. Natural selection
2. Mutation
3. The bottleneck effect
4. The founder effect

Q.

The most resistant organic material present in the exine of pollen grains is:

1. Cuticle

2. Suberin

3. Sporopollenin

4. Dipicolinic acid

Q.

Male gametes in angiopserms are formed by the division of:

1. Vegetative cell

2. Generative cell

3. Microspore mother cell

4. Microspore

Q.

Male gametophyte in angiosperms produces:

1. Three sperms

2. Two sperms and a vegetative cell

3. Single sperm and a vegetative cell

4. Single sperm and two vegetative cells

Q.

Male gametophyte in angiosperms produces:

1. Two sperms and a vegetative cell

2. Single sperm and two vegetative cells

3. Three sperms

4. Single sperm and a vegetative cell

Q.

Pericarp develops from:

1. Integuments of ovule

2. Thalamus of flower

3. Wall of ovary

4. Nucellus of ovule