10 - Science - 04. Biology - Reproduction In Plants | Attempts: 2673

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| By Padasalai10S

Padasalai10S

Community Contributor

Quizzes Created: 16 | Total Attempts: 57,134

Questions: 10 | Attempts: 2,673 | Updated: Mar 20, 2023

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10 - Science - 04. Biology - Reproduction In Plants - Quiz

Prepared By Mr. S. Ravikumar, B. T. Asst., GHS, Arangaldhurgam, Vellore District. & www. Padasalai. Net

Questions and Answers

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
Correct Answer
B. Binary fission

Explanation
Binary fission is the correct answer because it accurately describes the method of reproduction in unicellular organisms like amoeba and bacteria, where they divide into two equal halves to produce new organisms. Fragmentation refers to the breaking of an organism into pieces, budding is the formation of a new organism from an outgrowth on the parent organism, and spore formation is the production of specialized reproductive cells. None of these processes accurately describe the method of reproduction described in the question.

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2.

In sexual reproduction of lowering plants, the first event involved in this is ___________
- A.
  
  Fertilization
- B.
  
  Germination
- C.
  
  Regeneration
- D.
  
  Pollination
Correct Answer
D. Pollination

Explanation
In sexual reproduction of flowering plants, pollination is the first event that occurs. Pollination is the transfer of pollen from the male reproductive organ (anther) to the female reproductive organ (stigma) of a flower. This can occur through various means such as wind, water, or animal pollinators like bees or birds. Once pollination occurs, fertilization can take place, leading to the formation of seeds and fruits. Germination and regeneration are not directly related to the first event in sexual reproduction, making them incorrect options.

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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 are produced by the fungus are called conidia
- D.
  
  Thick walled vegetative cells produced by the algae during adverse conditions are called aplanospores
Correct Answer
C. Uninucleate non-motile asexual spores are produced by the fungus are called conidia

Explanation
The correct answer is "Uninucleate non-motile asexual spores are produced by the fungus are called conidia." Conidia are a type of asexual spore produced by fungi that are uninucleate (contain only one nucleus) and non-motile (do not have the ability to move). These spores are important for the dispersal and reproduction of fungi.

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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
Correct Answer
A. Aggregate fruit

Explanation
An aggregate fruit is formed from a single flower with multiple separate carpels, each of which develops into a small fruit called a fruitlet. These fruitlets are attached to a central receptacle, giving the appearance of a single fruit. Therefore, the correct answer is aggregate fruit.

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5.

If a water soaked seed is pressed, a small drop of water comes out through _________
- A.
  
  Stomata
- B.
  
  Lenticel
- C.
  
  Micropyle
- D.
  
  Radicle
Correct Answer
C. Micropyle

Explanation
When a water soaked seed is pressed, a small drop of water comes out through the micropyle. The micropyle is a small opening in the seed coat through which water can be released. This opening allows for the exchange of gases and the release of excess water, ensuring that the seed does not become waterlogged and can continue to respire properly.

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1
0
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
Correct Answer
D. Hard endocarp Hard endocarp Hard endocarp

Explanation
The mango fruit is called a stone fruit because it has a hard endocarp. The endocarp is the innermost layer of the fruit, and in the case of mangoes, it is hard and stony. This hard endocarp surrounds the seed or pit of the fruit, giving it the characteristic of a stone fruit.

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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
Correct Answer
C. The rudimentary stem portion known as radicle.

Explanation
The statement "The rudimentary stem portion known as radicle" is incorrect. The radicle is actually the rudimentary root portion of a seed, not the stem portion.

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8.

Consider the following statement regarding the dispersal of fruit by wind and select the correct answer.
- 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.
Correct Answer
B. Fruits of tridax are carry a persistent calyx modified into pappus.

Explanation
The correct answer is "Fruits of tridax are carry a persistent calyx modified into pappus." This statement suggests that the fruits of tridax have a persistent calyx, which is a structure that typically withers and falls off after the fruit matures. However, in the case of tridax, the calyx is modified into a pappus, which helps in wind dispersal of the fruit. The pappus is a structure that aids in the dispersal of fruits and seeds by wind.

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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
Correct Answer
D. Endosperm

Explanation
The endosperm is the correct answer because it is the tissue formed as a result of triple fusion in angiosperms. It acts as a nutritive tissue for the developing embryo, providing it with essential nutrients for growth and development. The endosperm is rich in starch, proteins, and other nutrients, and it is usually consumed by the growing embryo during germination.

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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
Correct Answer
B. The seeds are less in number

Explanation
The disadvantage of self pollination is that the seeds produced are less in number.

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Current Version
Mar 20, 2023

Quiz Edited by
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Dec 01, 2013

Quiz Created by
Padasalai10S

10 - Science - 04. Biology - Reproduction In Plants

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_________

In sexual reproduction of lowering plants, the first event involved in this is ___________

Which of the following statement is true?

The fertilized ovary is a fruit. The fruit develops from a single lower with multi carpellary, apocarpous superior ovary is _____

If a water soaked seed is pressed, a small drop of water comes out through _________

The mango fruit is called as stone fruit. because it has _________

Pick out the wrong statement.

Consider the following statement regarding the dispersal of fruit by wind and select the correct answer.

The product of triple fusion which acts as nutritive tissue for the development of embryo is ______

The disadvantage of self pollination is _______