List of top Botany Questions

Which of the following is not a biosafety concern for GM crops?

Action of restriction enzyme leads to the formation of sticky ends in both vector DNA and Foreign DNA because of
I. Recognise palindromic nucleotide sequence.
II. Cut the strand of DNA a little away from the centre of palindrome site.
III. Help to form complementary cut counter parts.

Match the following

Choose the correct statements among the following
I. The longest cells are nerve cells.
II. Smaller DNA in the bacteria called genetic material.
III. Bacterial flagellum has filament, hook and basal body.
IV. In Bacteria, flagella are used to attach to the rock.

Choose the correct statements from the following
I. Zygote is the vital link for continuity of species.
II. In water plants the number of male gametes produced are several times more than the number of female gametes.
III. Meiosis can occur in haploid organisms.
IV. Adventitious buds are developed on leaf margins of Bryophyllum.

Among the following fungi, which are placed under class Deuteromycetes?
(Alternaria, Aspergillus, Mucor, Claviceps, Penicillium, Trichoderma, Colletotrichum, Ustilago, Polyporus, Puccinia, Agaricus, Neurospora, Albugo, and Rhizopus)

Choose the correct statements among the following:
1. White spots on leaves are due to Puccinia.
2. Mycelium with multinucleated cytoplasm is called coenocytic.
3. Bacteria produce endospores under unfavourable conditions.
4. Gonyaulax release toxins to kill fish.
Identify the correct option from the following:

Choose the correct statements among the following
I) Pasteur given the name virus.
II) Lichen are good pollution indicators.
III) Three Domain groups were originated from progenote.
IV) Chrysophytes belongs to Monera.

Assertion (A): Lipids are not true Biomacromolecules.
Reason (R): The molecular weight of lipids is less than 800 Daltons.

Choose the correct statements among the following

I) Fatty acids are broken down to acetyl CoA before entry into respiratory pathway.
II) The F₁ component of ATPase is integral membrane protein complex.
III) Hans Krebs elucidated the tricarboxylic acid cycle.
IV) All living organisms retain the enzymatic machinery to partially oxidise glucose.

Match the following

List - I	List - II
A. Ori	IV. Controlling the copy number of linked DNA
B. Selectable marker	III. Permitting the growth of transformants
C. Cloning site	II. Single recognition site to link alien DNA
D. Cloning vector	I. Low molecular weight

Assertion (A): The progress in biology was rapid during the past three decades.
Reason (R): This was due to the invention of microscope and studies of sexual patterns.
Identify the correct option from the following:

Phenomenon that describe the first action spectra of photosynthesis:

I. Illumination of Cladophora
II. Detection of O$_2$ release using anaerobic bacteria
III. Accumulation of aerobic bacteria in red and blue light
IV. Cladophora in suspension of anaerobic bacteria

Choose the correct statements among the following
I. Epidermal cells have more cytoplasm and small vacuole.
II. Outer walls of guard cells are thick and inner walls are thin.
III. Presence of phloem on either side of xylem is seen in bicollateral vascular bundles.
IV. Trichomes of shoot system are multicellular.

Choose the correct statements among the following
I. Exine exhibits an array of patterns and designs.
II. Tapetum layers of microsporangium will be useful for the dehiscence.
III. The intine wall of pollengrains is made up cellulose and pectin.
IV. By wall formation, 8 celled embryo sac is developed.

Choose the correct statements among the following:
1. Plant ash includes all carbon and inorganic elements.
2. In amino acid, an amino group and acidic group on α-carbon makes it α-amino acid.
3. Glycerol has 3 -OH groups.
4. Acid insoluble fractions are called macromolecules.
Identify the correct option from the following:

Match the following:

List I
A) Mechanical support at young stem and leaf petiole
B) Cells in fruit walls of nuts
C) Cells absent in primary phloem
D) Endarch primary xylem

List II
I) Sclereids
II) Stem vascular bundles
III) Collenchyma tissue
IV) Bast fibers

Assertion (A): Algae will increase the level of dissolved oxygen in the immediate environment.
Reason (R): They form the food for aquatic animals.
Identify the correct option from the following: