List of top Botany Questions

How many meiotic divisions are required to produce 1600 seeds in an angiospermic plant?

Tall plant with yellow seeds (TtYy) is crossed with tall plant with green seeds (Ttyy). Find out proportions of offspring in F$_1$ generation:

Diplontic life cycle is shown by:

RNA interference involves:

Which hormone promotes flowering in pineapple and induce parthenocarpy in tomato?

Identify the correct pair from the following lists:

Loosely arranged parenchyma cells in Lenticels:

Consider the following statements:
Assertion (A): Members of genus Glomus form mycorrhiza.
Reason (R): Fungal symbiont facilitates the absorption of manganese by the plant from the soil.

Match the following:

Identify ``X'' name of enzyme; and ``Y'' enzyme class number by observing the reaction given below:
\[ \text{Glutamic acid} + NH_3 + \text{ATP} \xrightarrow{X} \text{Glutamine} + \text{ADP} + \text{iP} \]

Methanogens are:

Choose the correct statements among the following
I. Conjugation is a conservative process because donor bacteria donot retain copy of genetic material.
II. In Bacterial transformation, genetic information is expressed in recipient cell.
III. Salmonella typhimurium is a transformation bacteria.
IV. Biologically active toxic pollutant can be detected by Biosensors.

Arrange the following events that occur during prophase-I of Meiosis - I
A) Formation of synaptonemal complex
B) Repulsion between Homologous chromosomes
C) Formation of Bivalents
D) Exchange of Genetic material between non-sister chromatids of Homologous chromosomes
E) Terminalization
The correct sequence is
Options :

Assertion (A): In prokaryotes the DNA in the nucleoid is organized in large loops held by proteins.
Reason (R): In prokaryotes, negatively charged DNA molecules are held with positively charged proteins.
Identify the correct option from the following:

Choose the plants from the given list which have hypogynous flowers.
Mustard, Cucumber, Brinjal, Plum, Rose, Peach, Guava, Sunflower, and China Rose.

Choose the correct statements among the following
I. No energy is used directly by the plant to translocate water.
II. The mechanism of water transport from the soil through the plant body to the atmosphere includes diffusion, bulk flow, and osmosis.
III. Water moves in the root via apoplast, transmembrane and symplast pathway.
IV. The cohesion tension theory explains water transport in xylem.

Assertion (A): Trichomes help in preventing water loss due to transpiration.
Reason (R): The specialized cells near the guard cells together constitute stomatal apparatus.

Choose the correct statements:

I. In exothermic reactions, ‘P’ is at a lower level than ‘S’
II. Enzyme activity is affected by temperature due to changes in tertiary structure
III. Low temperature denatures the protein
IV. Ligases remove groups from substrate

Match the following:

Identify the plants with the following characters in a sequence:

A) Annual plants found in dry weather
B) Submerged in water without rooted in mud
C) No contact with soil, present on surface of water
D) Perennial plants to withstand prolonged drought conditions