Certain plants can reproduce both sexually and asexually. Under which of the following environmental conditions would asexual reproduction be MOST advantageous?
Unstable environment with frequent disturbances
Environment with high pathogen pressure
Environment with limited resources and high competition
Stable environment with abundant resources
Related Questions
Which of the correct example of the type of regeneration out of the two major types?
Morphallaxis–regeneration of two transversely cut equal pieces of one Hydra into two small Hydras
Epimorphosis –replacement of old and dead erythrocytes by the now ones
Morphallaxis-healing of wound in the skin
Epimorphosis-regeneration of crushed and filtered out pieces of Planaria into as many new planarian
Among the following asexual reproductive organs are (A) Zoospores (B) Gemmules in sponge (C) Bulbil (D) Rhizome of ginger (E) Offset of water hyacinth (F) Leaf buds of bryophyllum.
A, B, C, D, E, F
A, C, D, F only
B, C, E only
A, B, D, E only
Which of the following statement is not true for a clone?
A clone inherits the age of the donor organism.
A clone is genetically identical to the donor organism.
A clone may have a different mitochondrial DNA than the donor organism.
A clone's phenotype can be influenced by environmental factors.
Consider the following statements and choose the correct option.
I. The genetic constitution of a plant is unaffected in vegetative propagation.
II. Rhizome in ginger serves as an organ of vegetative reproduction.
III. Totipotency of cells enables us to micropropagate plants.
Statements I and II alone are true
Statements II and III alone are true
Statements II alone is true
All the three Statements I, II and II are true
Select the wrong statement:
Mitochondria are the powerhouse of the cell in all kingdoms except Monera
Cell wall is present in members of Fungi and Plantae.
Pseudopodia are locomotory and feeding structures in Sporozoans.
Mushrooms belong to Basidiomycetes.
In which one pair, both the plants can be vegetatively propagated by leaf pieces?
Bryophyllum and kalanchoe
Chrysanthemum and Agave
Agave and kalanchoe
Asparagus and Bryophyllum
If a homozygous dominant plant (TT) is crossed with a homozygous recessive plant (tt), what percentage of the F2 generation is expected to be heterozygous (Tt)?
25%
50%
75%
100%
Which of the correct example of the type of regeneration out of the two major types?
Morphallaxis–regeneration of two transversely cut equal pieces of one Hydra into two small Hydras
Epimorphosis –replacement of old and dead erythrocytes by the now ones
Morphallaxis-healing of wound in the skin
Epimorphosis-regeneration of crushed and filtered out pieces of Planaria into as many new planarian
A certain species of rotifer reproduces exclusively through parthenogenesis. A diploid female with a rare recessive allele 'a' on one of her homologous chromosomes undergoes thelytoky. Assuming no mutations, what is the probability that her offspring will express the recessive phenotype?
0
0.25
0.5
1
In a plant species that reproduces through apomixis, a mutation arises in a somatic cell that confers resistance to a fungal pathogen. What is the likelihood that this resistance trait will be passed on to the offspring?
Low, as somatic mutations are rarely heritable.
High, as apomixis bypasses meiosis and fertilization.
Dependent on whether the mutation is dominant or recessive.
Zero, as apomixis only involves the maternal gametophyte.
