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questions & answers.
Q1.
Fill in the blanks.
- The reproductive sex cells are known as _________________ .
- Multiple fission occurs in certain algae like Chlamydomonas and _______________ .
- _______________ takes place in plants which do not produce seeds.
- Sugarcane and pineapple are grown by ________________ .
- In grafting, the stem cutting called ________________ from ane plant is attached and tied to the rooted stem of another plant called _______________ .
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Answer:
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- gametes
- Chlorella
- Vegetative propagation
- artificial propagation
- scion, stock
Q2.
Tick the most appropriate answer.
- The simple division of an organism into two smaller daughter cells of roughly equal size is called
- binary fission
- multiple fission
- fragmentation
- budding
- Which of these can be reproduced by its stem?
- Carrot
- Bryophyllum
- Rose
- Papaya
- An incomplete flower with only androecium is called a
- hermaphrodite flower
- pistillate flower
- bisexual flower
- staminate flower
- Flowers which have all the four whorls are called
- neutral flower
- staminate flowers
- complete flowers
- incomplete flowers
- A pollen tube grows through the
- filament
- style
- anther
- ovary
- Seeds are produced from
- ovules
- anthers
- pollen grains
- eggs
- A plant embryo consists of
- cotyledons and embryonal axis
- plumule and radicle
- plumule and cotyledons
- cotyledons, embryonal axis and radicle
- Fertilization takes place inside the
- ovary
- ovule
- ovum
- gynoecium
- In cross pollination pollen grains from the anther of a flower are transferred to the stigma of
- the same flower
- another flower on the same plant
- flower of another plant of different variety
- flower of another plant of same variety
- Which of the following is an artificial process?
- Binary fission
- Budding
- Grafting
- Fragmentation
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Answer:
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- (a) Binary fission
- (c) Rose
- (d) Staminate flowers
- (c) Complete flowers
- (b) Style
- (a) Ovules
- (a) Cotyledons and embryonal axis
- (b) Ovule
- (d) flower of another plant of same variety
- (c) Grafting
Q3.
Fill in the blanks.
- Under unfavourable conditions certain organisms develop a _______________ for protection.
- The small outgrowth arising from the yeast cell is called _______________ .
- The gynoecium consists of ______________ , ________________ and _______________ .
- Pollination taking place between two flowers present on two separate parent plants is called _______________ .
- In peas, germination is ________________ .
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Answer:
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- cyst
- bud
- stigma, style, ovary
- cross pollination
- Hypogeal
Q4.
Define multiple fission.
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answer not shownQ5.
Define budding.
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