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प्रश्न
For binary fission, Amoeba required .................... parent cells.
(a) Three
(b) Two
(c) One
(d) Zero
उत्तर
(c) One
Amoeba undergoes asexual reproduction by binary fission. In this method, a single parent cell divides into two equal or nearly equal parts. Each part grows into a new individual.
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संबंधित प्रश्न
Name two simple organisms having the ability of regeneration.
Draw labelled diagrams to illustrate budding in Hydra.
Draw a labelled diagram to show that particular stage of binary fission in amoeba in which its nucleus elongates and divide into two and a constriction appears in its cell membrane.
Write two differences between binary fission and multiple fission in a tabular form.
Name the method by which Spirogyra reproduces under favourable conditions. Is this method sexual or asexual?
How does Planaria reproduce? Is this method sexual or asexual?
How does Plasmodium reproduce. Is this method sexual or asexual?
Describe reproduction by spores in Rhizopus
A student in viewing under a microscope a permanent slide showing various stages of asexual reproduction by budding in yeast. Draw diagrams of what he observes (in proper sequence)
Most of the plants reproduce by sexual method. Name two plants which can reproduce asexually.
Name two plants which can be grown from their broken stems.
which can be grown from their leaves.
What is the name of asexual reproduction method in Leishmania?
Fill in the following blanks with suitable words :
Plasmodium reproduces by the process of ............ fission whereas Paramecium reproduces by the process of ......... fission.
What is meant by multiple fission? Name one organism which reproduces by the process of multiple fission.
Name two marine organisms which also reproduce by the same method as yeast but form colonies.
What is the difference between the cuttings method and grafting method for the artificial propagation of plants?
A small part of the shoot of a plant is removed with a sharp knife. When the lower end of this small part of the shoot is buried in moist soil, it gradually develops roots and shoots and grows to become a new plant.
(a) What is the name of this method of propagating plants?
(b) What care should be taken while removing a small part of the shoot from the parent plant with a knife?
(c) Name any two plants which provide us with food directly or indirectly and are grown by this method.
(d) Give one advantage of this method of producing new plants.
(e) State whether it is a sexual method of reproduction or an asexual method. Why?
(f) What special name can be given to the genetically identical new plants produced by this technique?
Put a tick mark (✓) against the correct alternative in the following statement
Grafting is a method of:
State whether the following statement is true (T) or false (F):
Bacteria and yeast reproduce by sexual reproduction.
Mention the common method of reproduction in Bacteria.
Mention the common method of reproduction in Mango.
A blue colour flower plant denoted by BB is crossbred with that of white colour flower plant denoted by bb.
(a) State the colour of flower you would expect in their F1 generation plants.
(b) What must be the percentage of white flower plants in F2 generation if flowers of F1 plants are self-pollinated?
(c) State the expected ratio of the genotypes BB and Bb in the F2 progeny.
The following figure illustrates binary fission in Amoeba in an incorrect sequence.
The correct sequence is
(A) III, II, IV, I
(B) III, IV, II, I
(C) II, III, IV, I
(D) IV, III, II, I
Choose the correct alternative and rewrite the following:
Fermentation is a type of ____________________.
List in tabular form two differences between binary fission and multiple fission.
Name the parts of the plants used to grow following flower: Gladiolus
The form of vegetative reproduction of plants where seeds are formed without fusion of gametes is called
Porogamy refers to entry of pollen tube through ____________.
Find an odd one out.
Draw a neat and labelled diagram.
Spore formation
Identify the reason because of which cambium is essential for grafting in plants.
The ability of a cell to divide into several cells during reproduction in Plasmodium is called ______
Many unicellular organisms reproduce by the process of ______
In Spirogyra, asexual reproduction takes place by ______
______ do not produce spores.
Spirogyra reproduces by ______.
