Radial symmetry is found in the flowers of :-
(1) Pisum
(2) Cassia
(3) Brassica
(4) Trifolium

Free-central placentation is found in :-
(1) Brassica
(2) Citrus
(3) Dianthus
(4) Argemone

Cortex is the region found between :-
(1) Endodermis and pith
(2) Endodermis and vascular bundle
(3) Epidermis and stele
(4) Pericycle and endodermis

The balloon-shaped structures called tyloses :-
(1) Are extensions of xylem parenchyma cells into
vessels
(2) Are linked to the ascent of sap through xylem
vessels
(3) Originate in the lumen of vessels
(4) Characterize the sapwood

A non-proteinaceous enzyme is :-
(1) Ligase
(2) Deoxyribonuclease
(3) Lysozyme
(4) Ribozyme

Select the mismatch :-
(1) Protists-Eukaryotes
(2) Methanogens-Prokaryotes
(3) Gas vacuoles-Green bacteria
(4) Large central vacoules - Animal cells

Select the wrong statement :-
(1) Cyanobacteria lack flagellated cells.
(2) Mycoplasma is a wall-less microorganism
(3) Bacterial cell wall is made up of peptidoglycan.
(4) Pilli and fimbriae are mainly involved in
motility of bacterial cells

A cell organelle containing hydrolytic enzymes is :-
(1) Ribosome
(2) Mesosome
(3) Lysosome
(4) Microsome

During cell growth, DNA synthesis takes place in:-
(1) G2 phase
(2) M phase
(3) S phase
(4) G1 phase

Which of the following biomolecules is common to
respiration-mediated breakdown of fats,
carbohydrates and proteins ?
(1) Pyruvic acid
(2) Acetyl CoA
(3) Glucose-6-phosphate
(4) Fructose 1,6-bisphosphate

A few drops of sap were collected by cutting across
a plant stem by a suitable method. The sap was
tested chemically. Which one of the following test
results indicates that it is phloem sap ?
(1) Low refractive index
(2) Absence of sugar
(3) Acidic
(4) Alkaline

You are given a tissue with its potential for
differentiation in an artificial culture. Which of the
following pairs of hormones would you add to the
medium to secure shoots as well as roots ?
(1) Auxin and abscisic acid
(2) Gibberellin and abscisic acid
(3) IAA and gibberellin
(4) Auxin and cytokinin

Phytochrome is a :-
(1) Lipoprotein
(2) Chromoprotein
(3) Flavoprotein
(4) Glycoprotein

Which is essential for the growth of root tip ?
(1) Ca
(2) Mn
(3) Zn
(4) Fe

The process which makes major difference
between ``C_3`` and ``C_4`` plants is :-
(1) Photorespiration
(2) Respiration
(3) Glycolysis
(4) Calvin cycle