Advertisements
Advertisements
प्रश्न
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
|
उत्तर
| Column ‘I’ | Column ‘II’ |
|
(1) Inhibits plant growth
|
(e) Abscisic acid |
|
(2) Cytokinins
|
(d) Promote cell division |
|
(3) Cellular respiration
|
(c) Mitochondria |
|
(4) Bile
|
(a) Breaks large fat globules into smaller ones |
APPEARS IN
संबंधित प्रश्न
Define reproduction.
State the importance of DNA copying.
Why is variation beneficial to the species but not necessarily for the individual?
Explain the importance of reproduction in organisms.
Egg laid after fertilisation is made up of a single cell.
Find the odd one out:
Amoeba, Euglena, Planaria, Paramoecium
What is the name of the reproductive process :
which involves two parents?
What is the name of the reproductive process :
which involves only one parent?
Which type of reproduction :
does not involve gametes?
Name two animals which reproduce asexually.
Write down the different methods of asexual reproduction.
What is the basic difference between asexual reproduction and sexual reproduction?
Match the organisms given in column I with the methods of reproduction/propagation given in column II :
| Column I | Column II | |
| (i) Plasmodium | (a) Spore formation | |
| (ii) Spirogyra | (b) Leaves | |
| (iii) Jasmine | (c) Regeneration | |
| (iv) Apple tree | (d) Budding | |
| (v) Bryophyllum | (e) Binary fission | |
| (vi) Potatoes | (f) Layering | |
| (vii) Rhizopus | (g) Fragmentation | |
| (viii) Hydra | (h) Tubers | |
| (ix) Planaria | (i) Cuttings | |
| (x) Leishmania | (j) Multiple fission | |
| (xi) Sugar cane | (k) Grafting | |
| (xii) Rose |
The protozoan having a flagellum at its one end is :
(a) Amoeba
(b) Paramecium
(c) Hydra
(d) Leishmania
The offsprings formed by asexual reproduction method have greater similarity among themselves because :
(i) asexual reproduction involves only one parent
(ii) asexual reproduction involves two parents
(iii) asexual reproduction involves gametes
(iv) asexual reproduction does not involve gametes
(a) (i) and (ii)
(b) (i) and (iii)
(c) (ii) and (iv)
(d) (i) and (iv)The offsprings formed by asexual reproduction method have greater similarity among themselves because :
(i) asexual reproduction involves only one parent
(ii) asexual reproduction involves two parents
(iii) asexual reproduction involves gametes
(iv) asexual reproduction does not involve gametes
(a) (i) and (ii)
(b) (i) and (iii)
(c) (ii) and (iv)
(d) (i) and (iv)
Fill in the following blank with suitable word :
The union of a sperm nucleus with an egg nucleus is known as.......... and results in a .........egg.
The characteristics transmitted from parents to offspring are present in :
(a) cytoplasm
(b) ribosome
(c) golgi bodies
(d) genes
State whether the following statement is true (T) or false (F):
Dogs and cats reproduce from two parents.
State whether the following statement is true (T) or false (F):
Most organisms have the capacity of regeneration in some or the other way.
Find the odd-one out, giving reason.
Gamete, budding, fragmentation, regeneration.
Bryophyllum can reproduce by its ______.
What is the role of the seminal vesicles and the prostate gland?
Answer the following question.
The growing size of the human population is a cause of concern for all people. The rate of birth and death in a given population will determine its size. Reproduction is the process by which organisms increase their population. The process of sexual maturation for reproduction is gradual and takes place while general body growth is still going on. Some degree of sexual maturation does not necessarily mean that the mind or body is ready for sexual acts or for having and bringing up children. Various contraceptive devices are being used by human beings to control the size of the population.
(a) List two common signs of sexual maturation in boys and girls.
(b) What is the result of reckless female foeticide?
(c) Which contraceptive method changes the hormonal balance of the body?
(d) Write two factors that determine the size of a population.
Multiple choice question.
In ovule, meiosis occurs in ______
Which of the following types require pollinator but the result is genetically similar to autogamy?
The number of nuclei present in a zygote is _______.
Multiple choice question.
Which of these is the male reproductive organ in humans?
Multiple choice question.
Presence of beard in boys is a _______.
______ is an example of helobial endosperm.
Draw a well labelled diagram of T.S. anther.
Nebenkern is ______.
What is morula?
Write two types of reproduction in plants.
Assertion and Reason types of Question.
Assertion: In Banyan prop roots grow horizontally from the tree.
Reason: They give additional support to the tree.
In a flower, the parts that produce male and female gametes (germ cells) are
How is reproduction in Hydra different from that in Amoeba?
