Multiple Choice QuestionsExamine the figure below and select the right option giving all the four part (A, B,C and D) correctly identified.
|
A |
B |
C |
D |
|
Archegoni Ophore |
Female thallus |
Gemma cup |
Rhizoids |
|
A |
B |
C |
D |
|
Archegoni |
Female thallus | Bud | Foot |
|
A |
B |
C |
D |
|
Seta |
Sporophyte | Protonema | Rhizods |
|
A |
B |
C |
D |
|
Seta |
Sporophyte | Protonema | Rhizods |
In cloning of cattle a fertillized egg is taken out of the mother’s womb and
the egg is divided into 4 pairs of cells which are implanted into the womb of other cows
in the eight cell stage, cells are separated and cultured until small embryos are formed which are implanted into the womb of other cow
in the eight cell stage the individual cells are separated under electrical field for further development in culture media
in the eight cell stage the individual cells are separated under electrical field for further development in culture media
How many different kinds of gametes will be produced by a plant having the genotype AABbCC?
Three
Four
Nine
Nine
Select the correct statement regarding reproduction
Mating in dogs is synchronised with lunar cycle.
Salamanders always have internal fertilisation.
In Trygon, the male introduces sperms into female through a modified pelvic fin.
Catla has internal fertilisation
Which form of reproduction is correctly matched?
Euglena transverse binary fission
Paramecium longitudinal binary fission
Amoeba multiple fission
Plasmodium binary fission
C.
Amoeba multiple fission
Reproduction is an essential feature of all living organisms. It is the process by which an individual multiplies in number by producing more individuals of its own type.
Amoeba proteus does not reproduce sexually. The reproduction is essentially asexually and takes place by various methods such as binary fission, multiple fission and sporulation. Binary fission is the most common mode of reproduction. It results in the division of the parent Amoeba into two daughter amoebea. Amoeba reproduces by multiple fission during adverse environmental conditions.
Euglena has longitudinal binary fission. Paramecium has transverse binary fission and Plasmodium has multiple fission.
Assertion: Many plants are propagated vegetatively even though they bear seeds.
Reason: Potatoes multiply by tubers and apple by cutting.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false.
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