List of top Botany Questions asked in Andhra Pradesh Engineering Agriculture and Medical Common Entrance Test

Stem tubes, Corn, Rhizome, Cladophyll, Bulbil, Stolon modifications shown by this correct sequence of plants

Pyriform gametes with two laterally attached flagella are found in

Identify wrong matching

Name the plant and body showing Cup or saucer shaped ascocarp

Select the correct combinations:

Choose the correct statement related to biological control agents:
A. No negative impact on plants, mammals, birds, or insects.
B. Ecologically sensitive area is being treated.
C. Species-specific insecticidal applications.
D. Integrated pest management is not benefited.

Assertion [A]: Genetic variability is the root of any breeding programme.
Reason [R]: The entire collection of plants or seeds having all the diverse alleles for all genes in a given crop is called germ plasm collection.

Study the table and find the correct combination:

Assertion (A): PCR is used to detect HIV.
Reason (R): It is based on the principle of antigen-antibody interaction.

Assertion (A): In general, gene gun method is used to insert DNA into the competent host.
Reason (R): In biolistic method, cells are bombarded with DNA coated with microparticles of gold.

Match the following list:

Match the following list:

Choose the correct statements regarding DNA discovery:
A. Watson, a physicist and Crick, a zoologist were awarded Nobel prize in 1962
B. The data based on X-ray diffraction was used for DNA structure
C. Two nucleotides can be linked in the 5' to 3' direction through phosphodiester bond
D. CsCl gradient is used to measure the densities of DNA

Match the following list:

Match the following list:

Match the following list:

Choose the correct statement related to growth rate, conditions and growth substances:
A. Root elongation is the arithmetic growth
B. Geometric growth shows sigmoid growth curve
C. Turgidity helps the cells in extension growth
D. Natural cytokinins are synthesised in older parts of the plant

Match the following list:

Assertion (A): Light harvesting complexes made up of many pigments bound to proteins and are called antennae.
Reason (R): Antennae absorb different wavelengths of light.

Choose the correct statement among the following
A. The first action spectrum of photosynthesis was observed in the Cladophora experiment.
B. Chlorophyll 'b' will appear blue-green in the chromatogram.
C. In the biosynthetic phase of photosynthesis, ATP and NADPH are used.
D. In photosynthesis, light saturation occurs at 10% of full sunlight.
E. In CAM plants, RuBisCo will be absent.

Find the incorrect statement regarding Enzymes
A. Enzymes catalyzing the linking together of two compounds are lyases.
B. Glutamic acid is converted into glutamine in the presence of glutamine synthetase.
C. The average content of ‘S’ and that of the transition state is called activation energy.
D. Inorganic catalysts work similarly to enzymes at high temperatures.

Match the following list:

Assertion (A): Some essential elements can alter the osmotic potential of a cell.
Reason (R): Sulphur is the main constituent of several coenzymes.