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प्रश्न
Write a short note on regeneration.
उत्तर
APPEARS IN
संबंधित प्रश्न
…………. is a mode of asexual reproduction.
(a) Cloning
(b) Budding
(c) Pollination
(d) Germination
List two advantages of vegetative propagation.
Draw in sequence (showing the four stages), the process of binary fission in Amoeba.
State whether the following statement is true or false :
Spores produced by the bread mould plant are actually its seeds.
Name two plants which can be grown from their broken stems.
Name any two plants which are propagated by cuttings method.
Why does bread mould grow profusely on a moist slice of bread but not on a dry slice of bread?
Name one organism which reproduces by fission and another which reproduces by fragmentation.
What is yeast? Describe the process of reproduction in yeast with the help of labelled diagrams.
One of the following organisms does not reproduce by budding. This is :
(a) Sponge
(b) Yeast
(c) Hydra
(d) Planaria
The two organisms which can regenerate fully from their cut body parts are :
(a) Paramecium and Hydra
(b) Hydra and Amoeba
(c) Planaria and Leishmania
(d) Hydra and Planaria
The organisms which can reproduce by fragmentation are :
(a) Corals and Sponges
(b) Corals and Spirogyra
(c) sea anemone and Spirogyra
(d) Sponges and Sea anemones
The cut part of a plant stem (without roots) which is used in grafting is called :
(a) stock
(b) stump
(c) scion
(d) graft
Multiple fission occurs in one of the following. This is :
(a) bread mould
(b) kala-azar parasite
(c) flatworm
(d) malaria parasite
APlanaria worm is cut horizontally in the middle into two halves P and Q such that the part P contains the whole head of the worm. Another Planaria worm is cut vertically into two halves R and s in such a way that both the cut pieces R and S contain half head each. Which of the cut pieces of the twoPlanaria worms could regenerate to form the complete respective worms?
(a) only P
(b) only R and S
(c) P, R and S
(d) P, Q, R and S
Write a short note on Micro propagation.
Write a short note on Bryophyllum.
Fill in the blank:
Budding produces cells of __________ size.
Differentiate between the following:
Binary fission and budding
Define the following:
Vegetative reproduction
Define the following:
Tissue culture
Mention the common method of reproduction in Bacteria.
Describe the advantages of vegetative reproduction.
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.
Name the strain of yeast used in the industrial production of wine.
Fill in the blanks and rewrite the completed statements:
___________ acid inhibits growth leading to wilting of leaves.
In hydra the type of reproduction is ___________.
Write four lines on the following: Budding
Name the parts of the plants used to grow following flower: Rose
Name the parts of the plants used to grow following flower: Gladiolus
Porogamy refers to entry of pollen tube through ____________.
Name any one plant in which double fertilization was discovered?
Define.
Fragmentation
Identify the type of reproduction from the following explanation and draw a neat and labelled diagram.
- The body of the parent organism breaks up into many fragments and each fragment starts to live as an independent new organism.
- Give two examples of living organisms which follow this type of reproduction method.
- Which type of reproduction is indicated in the following diagram?
- Redraw the given type of reproduction in the correct sequence and explain it.
Length of pollen tube depends on the distance between
Which of the following statements are true for flowers?
- Flowers are always bisexual
- They are the sexual reproductive organs
- They are produced in all groups of plants
- After fertilisation they give rise to fruits
When one of the following is correctly matched?
