List of top Botany Questions

Which of the following statements are correct about viroids?

How many times the diploid number of chromosomes of Ophioglossum is more than haploid number of chromosomes of Zea mays?

Development of an embryo from an unfertilized egg cell is called as

Study the structural formula given below and identify the compound/substance with its related function

Study the lists I, II, III & IV given below and identify the mismatch.

Mycoplasma causes 'X' disease in plants and 'Y' disease in cattle. 'X' and 'Y' diseases serially are

Among the following, Acidic amino acid, Basic amino acid and Neutral amino acids are in the sequence of

Consider the following statements:
Assertion (A): Hilum is a scar on the seed coat
Reason (R): Through hilum the developing seeds were attached to the fruit

Identify the correctly matched pairs.
A. Leptotene - Synapsis occurs
B. Zygotene - Pairing of homologous chromosomes
C. Pachytene - Crossing over do not occur
D. Diplotene - Nuclear membrane dissolves
E. Diakinesis - Terminalisation of chiasmata

Identify the correct parts of leaf modifications of the pitcher plant shown in Lists-1 and-2.

Identify the sclerenchymatous structures (parts) given below related in dicot and monocot stems:
I. Pericycle in young dicot stem
II. Hypodermis in monocot stem
III. Vascular bundle sheath in monocot stem
IV. Endodermis in dicot stem

Leaf tendrils and foliar stipules are found in this plant

In several fungi and plants, the bisexual condition is denoted by

Match the following:

Match the following:

Identify A, B, C and D in the diagram of E.coli cloning vector of pBR322:

Observe the chemical reaction and identify the enzyme and its prosthetic group:

Identify the incorrect pair:
I. Zinc - ABA Synthesis
II. Boron - Cell elongation
III. Nickel - Urease activator
IV. Molybdenum - Carbohydrate translocation

Consider the following statements:
Assertion (A): Seed dormancy may be caused by hard seed coats in Fabaceae
Reason (R): Such type of seed dormancy can be broken by stratification

Chromosome maps / Genetic maps were first prepared by:

Tetracycline resistance gene of PBR322 shows recognition site for which restriction enzyme?

The combination of frequency between the genes a and c is 5%; b and c is 15%; b and d is 9%; a and b is 20%; c and d is 24%; and a and d is 29%. Identify the sequence of genes on a linear chromosome:

Identify the correct matching pair to Calvin cycle:

The figure given below shows lac operon and its function. Identify A, B, C and D respectively:

Which seeds cannot germinate and establish without the presence of mycorrhizae?