1. The method 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
Answer: b. binary fission
2. In sexual reproduction of flowering
plants, the first event involved in this is ________.
a. Fertilization
b. germination
c. regeneration
d. pollination
Answer: d. Pollination
3. Which of the following statement is true?
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 produced by fungus are called conidia.
d. Thick – walled vegetative cells
produced by algae during adverse conditions are called aplanospores.
Answer:
c. Uninucleate, non – motile, asexual spores produced by fungus are
called conidia
4. The fertilized ovary is a fruit that
develops from a single flower with multi carpellary, apocarpous superior ovary
is ________.
a. Aggregate fruit
b. Composite fruit
c. Simple fruit
d. Multiple fruit
Answer: a. Aggregate
fruit
5. If a water soaked seed is pressed, a
small drop of water comes out through the ________.
a. stomata
b. lenticels
c. micropyle
d. radical
Answer:
c. Micropyle
6. The mango fruit is called as stone fruit.
Because it has ________.
a. skinny epicarp
b. stony mesocarp
c. fleshy endocarp
d. hard endocarp
Answer: d. Hard endocarp
7. Pick out the wrong statement
a. In a dicot seed there is a short
longitudinal whitish ridge called the raphae.
b. The minute opening in a dicot seed
is known as micropyle
c. The rudimentary stem portion is
known as radical.
d. The rudimentary root portion is
called radical.
Answer: The rudimentary root portion is called
radical.
8. Consider the following statements
regarding the dispersal of fruits and seeds by wind and select the correct
answer.
a. Fruits and seeds are dispersed with
a sudden jerk by an an explosive mechanism.
b. The fruits of tridax carry a
persistent calyx jerk by an explosive mechanism.
c. The fruits of xanthium have sharp
pointed stiff hooks.
d. The mesocarp of coconut is fibrous.
Answer: b. The fruits of tridax carry a persistent
calyx modified into pappus.
9. The product of triple fusion which acts as
nutritive tissue for the development of an embryo is _______. (APRIL – 2014)
a. Zygote
b. placenta
c. scutellum
d. endosperm
Answer: 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
Answer: b. The seeds are less in number
11. The flower is important to a plant because
it helps in ________.
a. attracting
b. production of nectar
c. pollination
d. sexual reproduction
Answer: d. Sexual reproduction
12. The essential organs of the flower are
________.
a. Calyx and Corolla
b. Androecium and Gynoecium
c. Calyx and Androecium
d. Corolla and Gynoecium
Answer: b. Androecium and Gynoecium
13. Cross pollination is important for producing
________.
a. new varieties of plants
b. plants with better growth
c. disease resistant plants
d. all of the above
Answer: d. All of the above
14. Anemophily occurs in ________.
a. Vallisneria
b. Grass
c. Cocount
d. Datrura
Answer:
b. Grass
15. Which of the following structure /
arrangement favours entamophily?
a. Pollen grains with wing and feathery
stigma
b. Colourful petals and nectar
secretion
c. A bunch of flowers with less pollen
d. Pollen grains with mucous covering.
Answer:
b. Colourful petals and nectar secretion
16. Post – fertilization, the ovule changes into
a / an ________.
a. Seed
b. Fruit
c. endosperm
d. pericarp
Answer:
a. seed
17. Which of the following is correctly matched?
a. False fruit – mango
b. Multiple fruit – apple
c. Aggregate fruit – polyalthia
d. Caryopsis – Banana
Answer: c. Aggregate fruit - Polyalthia
18.
Indentify the mismatched pair.
a. Legume – Dry dehiscent fruit
b. Cypsela – Dry indehiscent fruit
c. Pome – Fleshy fruit
d. Regma – Resembles legume
Answer: d. Regma – Resembles legume
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