30 Questions
What does the Pyramid of biomass depict in a food chain?
The total amount of living material
In which ecosystems are an inverted pyramid of numbers and an inverted pyramid of biomass respectively seen?
Sea and tree ecosystems
Which organization released the list of endangered species?
IUCN
What characterizes Amensalism in species association?
One species is harmed and the other is unaffected
Where does Strontium-90 accumulate in the body?
Bone
Which activity does not contribute to the loss of biodiversity?
Keeping animals in zoological parks
Which plant is correctly matched with its scientific name?
Water lily - Rosa multiflora
In a random mating population in equilibrium, which factor leads to a non-directional change in gene frequency?
Random drift
Where is the antigen binding site located in each immunoglobulin?
Variable region of both heavy and light chain
Who was awarded the Nobel Prize for the development of the PCR technique?
Kary Mullis
From which organisms are insect control proteins extracted?
Bacillus thuringiensis
Plants adapted to living partly in water and partly above the substratum are called:
Helophytes
What is the main cause of chromosomal disorders?
Failure of segregation of chromatids during cell division
What is the term for the gain or loss of a chromosome(s) due to failed segregation during cell division?
Aneuploidy
What is the term for an increase in a whole set of chromosomes in an organism?
Polyploidy
In a normal human being, how many pairs of autosomes are present?
23 pairs
Which chromosomal disorder is characterized by the presence of an additional copy of a chromosome in an individual?
Trisomy
What are examples of chromosomal disorders mentioned in the passage?
Down's syndrome and Turner's syndrome
What is the main reason why offspring formed by sexual reproduction exhibit more variation than those formed by asexual reproduction?
Gametes of parents have qualitatively different genetic composition.
When pollen is transferred from the anther of a flower to the stigma of another flower of the same plant, what type of pollination is it referred to as?
Geitonogamy
Which organism is commonly used as an indicator of water pollution?
Escherichia coli
In sexual reproduction, what contributes to the high variation in offspring?
The involvement of genetic material from different species.
Which term describes the transfer of pollen between flowers of different plants?
Xenogamy
Which of the following is not typically used as an indicator organism for water pollution?
Eichhornia crassipes
What term describes the stage of disease known for the process of cell division?
Mitosis
According to Lamarckism, why did long-necked giraffes evolve?
By stretching of necks over several generations
Which components are correctly associated with mammalian testes?
Sertoli cells, Seminiferous tubules, Leydig cells
In the given diagram of a young anther's transverse section, which labeling represents the correct placement of the wall layers?
(i) Epidermis Tapetum Endothecium Middle layers
Which statement is most appropriate regarding leguminous plants and nitrogen deficiency?
Statement I is correct and Statement II is incorrect.
Which of the following terms describes the spread of disease to other parts of the body?
Metastasis
Test your knowledge on disease stages and Lamarckism theory with these multiple-choice questions. See if you can identify the correct answers related to disease progression and evolutionary concepts.
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