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Question
Explain the term Reproduction.
Solution
The fundamental characteristics of living things to produce new individuals of the same species, that is a new generation of the species from an existing individual is known as reproduction.
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Asexual reproduction is :
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(b) a method by which all types of organisms reproduce
(c) a method producing genetically identical offspring
(d) a method in which more than one parent are involved
In the list of organisms given below, those which reproduce by the asexual method are :
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(ii) yak
(iii) yeast
(iv) Amoeba
(a) (ii) and (iv)
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What type of fertilisation takes place in fish?
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Most organisms have the capacity of regeneration in some or the other way.
Find the odd-one out, giving reason.
Gamete, budding, fragmentation, regeneration.
Differentiate between the following:
Asexual reproduction and sexual reproduction.
Write the full form of DNA.
Match the following:
| Column ‘I’ | Column ‘II’ |
|
(1) Inhibits plant growth
|
(a) Breaks large fat globules into smaller ones
|
|
(2) Cytokinins
|
(b) Auxins
|
|
(3) Cellular respiration
|
(c) Mitochondria
|
|
(4) Bile
|
(d) Promote cell division
|
|
(e) Abscisic acid
|
Name the factors which take part in this process.
Multiple choice question.
The ploidy level is not the same in ______.
If diploid chromosome number in a flowering plant is 12, then which one of the following will have 6 chromosomes?
Multiple choice question.
Point out the odd one.
The number of nuclei present in a zygote is _______.
Sporoderm is made up of ______.
The example of dicot endospermic seed is ______.
Draw a well labelled diagram of T.S. anther.
Seminal fluid is ______ in nature.
Which of the following is not a part of the uterus?
Nervous system develops from ______ of embryonic layer.
What are the causes for the extinction of animals?
Reproductive part of a plant is ______.
Write two types of reproduction in plants.
The plant which propagates with the help of its leaves is ______.
Name two organisms that reproduce through budding.
Identify the homologous pair.
Which of the following nucleus is unlike other nuclei in the female gametophyte of angiosperms?
The statement ‘nothing lives forever, yet life continues’ illustrates the role of ______.
