List of top Biology Questions

Which one of the following phytohormones promotes nutrient mobilization which helps in the delay of leaf senescence in plants?
Which of the following are the post-transcriptional events in an eukaryotic cell? (A) Transport of pre-mRNA to cytoplasm prior to splicing.
(B) Removal of introns and joining of exons.
(C) Addition of methyl group at 5' end of hnRNA.
(D) Addition of adenine residues at 3' end of hnRNA.
(E) Base pairing of two complementary RNAs.
Choose the correct answer from the options given below:
Which of the following statement is correct about location of the male frog copulatory pad?

The correct sequence of events in the life cycle of bryophytes is:
A. Fusion of antherozoid with egg.
B. Attachment of gametophyte to substratum.
C. Reduction division to produce haploid spores.
D. Formation of sporophyte.
E. Release of antherozoids into water.
Choose the correct answer from the options given below.

Which one of the following statements refers to Reductionist Biology?

Match List I with List II:

Choose the correct answer from the options given below:

Match List I with List II:

Choose the option with all correct matches.

The plants showing: hypogynous flower, valvate aestivation, and tricarpellary ovary are:
In which group of algae are food materials stored in pyrenoids?
The number of ATP and NADPH molecules required respectively to synthesize one molecule of glucose in C\(_3\) plants is:
Which part of the human eye controls the amount of light entering it?
Which of the following statements about photosynthesis is correct?
Which gas is primarily responsible for the greenhouse effect?
Which plant hormone is responsible for apical dominance?
Which of the following would most likely occur in an ecosystem following the removal of a keystone species?
Which of the following statements is true regarding Mendel's law of independent assortment?
During DNA replication in eukaryotic cells, which of the following enzymes is responsible for removing RNA primers and filling the gaps with DNA nucleotides?
In the electron transport chain of mitochondria, the final electron acceptor is:
Which of the following best explains the Bohr effect in hemoglobin?
Which plant hormone is primarily responsible for initiating seed germination and breaking seed dormancy?
In which of the following pairs both plants exhibit epigynous flowers and axile placentation?
Which of the following plants shows both stem and root modifications for storage?
Introrse and extrorse anthers are found in the following plants respectively:
Assertion (A): Xylem transports water and minerals from roots to other parts of the plant.
Reason (R): Xylem vessels have sieve plates that facilitate transport.
Which hormone is secreted in response to high blood sugar levels?