DOWN- The layer of the earth’s atmosphere that lies above the
troposphere and extends to about 50 km above the earth’s
surface. (12) - A cluster of fruits formed from the unfused carpels of a single
flower. (7) - The act of moving from place to place. (10)
- The major blood vessel in higher vertebrates through which
oxygenated blood leaves the heart from the left ventricle. (5) - A Russian biologist, who discovered double fertilisation in
plants in 1898. (9) - A dorsoventral plane that extends down the long axis of the
body, parallel to the median plane, dividing it into right and
left parts. (8) - The delicate membranous covering that forms the myelin
sheath around the axons of peripheral nerves. (10) - An iridium rich thin layer of clay deposited at the end of
Cretaceous period which marks the beginning of Paleogene.
(10) - A plant hormone that promotes root formation and suppresses
lateral bud growth. (5) - A case, covering or sheath, such as the outer covering of the
cocoon of certain insects. (5) - It is a characteristic action observed during short phases of
paradoxical sleep, besides restlessness and dreaming. (3)
nn
ACROSS
- The class of nonphotosynthetic fungi that resemble algae
and reproduce by forming oospores, sometimes classified
as protoctists. (9) - Slender thigmotropic organs of many climbing plants.
(7) - A distinct region of the body of an arthropod such as
head, thorax or abdomen of an insect. (5) - A polyhydric alcohol derived from mannose or fructose
which is an important carbohydrate reserve in brown
algae. (8) - A plant stem that grows horizontally under or along the
ground and often sends out roots and shoots. (7) - A complex polysaccharide occurring in the cell walls of
the brown algae. (5) - A term used for nerve fibres or blood vessels that carry
nerve impulses, blood etc from the outer regions of a
body or organ towards its centre. (8) - The lignified or fibrous protective covering of a seed
that develops from the integuments of the ovule after
fertilisation. (5) - A food rich layer of cells around a group of spore mother cells
in vascular plants. (7) - The position or status of a taxon in a classification hierarchy.
(4) - Any enzyme that catalyses oxidation-reduction reactions that
involve the transfer of electrons to molecular oxygen. (7) - The substance secreted by sebaceous glands onto the surface
of the skin. (5) - A conical chamber in the kidney into which urine drains from
kidney tubules before passing to the ureter. (6) - An organism which is at haploid stage of its life cycle. (7)
- Describing a body of water e.g., lake with an abundant supply
of nutrients and a high rate of formation of organic matter by
photosynthesis. (9) - The mass of grains containing the male gametes of seed
plants. (6) - A type of muscle whose function is to pull a limb inwards,
towards the body of an animal. (8) - A passage through the lipid bilayers of adjacent plasma
membrane which consists of hexagonally packed tubes and
mediates the transfer of small molecules or ions between
interacting cells. (5) - Sexual reproduction involving the production and fusion of
gametes that are similar in size and structure. (7)