Assignment Details

Heredity and Evolution - NCERT, How Do Organisms Reproduce - NCERT and 1 other Topics

1441 minutes

May 09, 8:59 PM

60.0 marks

MCQ

30 questions

Anant Ratan

for 6 to 12 standred students

Class Details

Maths Physics Chemistry

Class :- 8 ,9 and 10

Maths Physics Chemistry

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Question Text

Question 2 :
State whether the statement is TRUE or FALSE : Offspring formed by asexual method of reproduction have greater similarity among themselves because asexual reproduction occurs before sexual reproduction.

Question 3 :
Whether formation of germ cells is the function of testes at puberty ?

Question 4 :
Why does bread mould grow profusely on a moist slice of bread rather than on a dry slice of bread?

Question 5 :
In human females, an event that reflects onset of reproductive phase is

Question 6 :
State whether the statement is TRUE or FALSE : Unisexual flowers possess either stamen or pistil.

Question 7 :
State whether the statement is TRUE or FALSE : Sexual reproduction in flowering plants requires two types of gametes.

Question 8 :
The correct sequence of reproductive stages seen in flowering plants is

Question 9 :
Can you consider cell division as a type of reproduction in unicellular organism?

Question 10 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61cc185078c526e972caea1d.PNG' /> In the above figure, would a Planaria cut vertically into two halves regenerate into two individuals?

Question 11 :
Speciation may take place when variation is combined with geographical isolation.

Question 13 :
What factors could lead to the rise of a new species?

Question 14 :
Some dinosaurs had feathers although they could not fly but birds have feathers that help them to fly. In the context of evolution this means that :

Question 15 :
Some dinosaurs had feathers although they could fly but birds have feathers that help them to fly. In the context of evolution this means that -----------.

Question 16 :
Bacteria have a simpler body plan when compared with human beings. Does it mean that human beings are more evolved than bacteria?

Question 17 :
From the list given below, select the character which can be acquired but not inherited

Question 19 :
A very small population of a species faces a greater threat of extinction than a larger population. Is this statement TRUE or FALSE?

Question 21 :
Suggest one word for the statement/ definition: The physical factors like temperature, rainfall, wind and soil of an ecosystem

Question 22 :
In the given food chain, suppose the amount of energy at fourth trophic level is 5 kJ, what will be the energy available at the producer level? Grass → Grasshopper → Frog → Snake → Hawk

Question 23 :
State TRUE or FALSE: A food chain is a linear network of links in a food web starting from producer organisms and ending at apex predator species, detritivores, or decomposer species.

Question 27 :
In the following groups of materials, which group (s) contains only non-biodegradable items? (i) Wood, paper, leather (ii) Polythene, detergent, PVC (iii) Plastic, detergent, grass (iv) Plastic, bakelite, DDT

Question 30 :
Give any two ways in which non-biodegradable substances would affect the environment.

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