Other Biology Answers

Which of the following statements A to D describes the movement of water across plant roots?

A) The Casparian strip blocks movement by the symplast pathway.

B) The symplast pathway requires water to cross partially permeable membranes.

C) Water moves from the soil to the root hair cells up a water potential gradient.

D) Water moves through the leaves only by the symplast pathway and across the roots only by the apoplast pathway.

Which of the following statements A to D does not correctly describe the structure or formation of plant vascular tissues?

A) Companion cells are linked to xylem vessels by plasmodesmata.

B) Mature sieve tube elements do not contain nuclei.

C) Phloem and xylem are formed by differentiation of vascular meristems.

D) Xylem vessels have non-lignified pits to allow movement in and out.

Which of the following statements A to D about microscopes is correct?

A) A light microscope with an eyepiece lens magnification of x10 and an objective lens magnification of x50 will have an overall magnification of x60.

B) Scanning electron microscopes and laser scanning confocal microscopes can both produce three dimensional images.

C) The maximum resolution of a scanning electron microscope is lower than that of a light microscope.

D) Transmission electron microscopes and laser scanning confocal microscopes can both produce three dimensional images

Which of the following statements A to D about differential staining is not true?

A) Differential staining can distinguish between different organelles.

B) Differential staining can distinguish between types of cell.

C) Differential staining can distinguish between types of organism.

D) Differential staining is a common feature of electron microscopy

What are the importance of anticoagulant?

Study the floral dissection of Chrysanthemoides monilifera,record the floral features and compile a floral formula

Discuss the importance of Binomial Nomenclature by citing different example.

Classify Mangifera indica starting from kingdom up to species.

Answers the following briefly:

(i) Different types of keys for identification in a taxonomic works.

(ii)Neotaxonomy and its importance.

(iii) Principles of Binomial Nomenclature of classification in taxonomy.

(iv)Ethics of herbarium.

(v)Difference between alpha and omega taxonomy.

Write short notes on the following:

(i)Type Specimens

(ii) Taxonomic hierarchy

(iii)Flora & (iv)Wild life Sanctuaries.