10 - Science - 04. Biology - Reproduction In Plants
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- 1.This is the one of the methods of reproduction in unicellular organisms like amoeba and bacteria in which they split into two equal halves and produce new ones is called_________
- A.
Fragmentation
- B.
Binary fission
- C.
Budding
- D.
Spore formation
- 2.In sexual reproduction of lowering plants, the first event involved in this is ___________
- A.
Fertilization
- B.
Germination
- C.
Regeneration
- D.
Pollination
- 3.
- A.
Thin walled non mobile spores are called zoospores
- B.
A motile asexual spore produced by some algae bacteria and fungi are Akinetes
- C.
Uninucleate non-motile asexual spores are produced by the fungus are called conidia
- D.
Thick walled vegetative cells produced by the algae during adverse conditions are called aplanospores
- 4.The fertilized ovary is a fruit. The fruit develops from a single lower with multi carpellary, apocarpous superior ovary is _____
- A.
Aggregate fruit
- B.
Composite fruit
- C.
Simple fruit
- D.
Multiple fruit
- 5.If a water soaked seed is pressed, a small drop of water comes out through _________
- A.
Stomata
- B.
Lenticel
- C.
Micropyle
- D.
Radicle
- 6.The mango fruit is called as stone fruit. because it has _________
- A.
Skinny epicarp
- B.
Stony mesocarp
- C.
Fleshy endocarp
- D.
Hard endocarp Hard endocarp Hard endocarp
- 7.Pick out the wrong statement.
- A.
In a dicot seed there is a short longitudinal whitish ridge is called the raphae
- B.
There is a minute opening in dicot seed is known as micropyle.
- C.
The rudimentary stem portion known as radicle.
- D.
The rudimentary root portion is called radicle
- 8.
- A.
Fruits and seeds dispersed with a sudden jerk by an explosive mechanism.
- B.
Fruits of tridax are carry a persistent calyx modified into pappus.
- C.
The fruits of xanthium have sharp pointed stiff hooks.
- D.
The mesocarp of coconut is fibres.
- 9.The product of triple fusion which acts as nutritive tissue for the development of embryo is ______
- A.
Zygote
- B.
Placenta
- C.
Scutellum
- D.
Endosperm
- 10.The disadvantage of self pollination is _______
- A.
There is no wastage of pollen grains
- B.
The seeds are less in number
- C.
Self pollination is sure in bisexual flowers
- D.
Flowers need not depend on agents of pollination
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