- Particulate organic matter precipitated by sewage treatment.
(6) - The degeneration or withering of an organ or part of the
body. (7) - a rod shaped bacterium. (8)
- a small, transparent, fish-like, marine organism of the subphylum
cephalochordata, usually found partially buried on the ocean
floor. (8) - a pituitary hormone, which stimulates the contraction of uterine
muscles and the secretion of milk. (8) - The mass of chewed food mixed with saliva formed in the mouth,
by the action of tongue. (5) - The sequence of plant communities occurring during the
transition from shallow open water to forest or bog. (9) - a sulphur containing amino acid. (8)
- The climax of sexual excitement in humans. (6)
- One of a series of acidic dyes used in optical microscopy, that
colours cytoplasm pink and cellulose red. (5) - a sexual spore bearing cell produced in ascomycete fungi. (5)
- a poison produced by a living organism, especially a
bacterium. (5) - a complete succession of plant communities, which results in
climax community. (4) nn
ACROSS
- The free-swimming larva of many marine and freshwater
crustaceans. (8) - The lower lips in the mouthparts of an insect, which are
used in feeding. (5) - a type of foliage leaf in clubmosses and horsetails that
has a single unbranched midrib. (10) - The arrangement of leaves on a plant stem or its
branches. (10) - a minute blind-ended lymph vessel that occurs in each
villus of the small intestine. (7) - a point mutation in which an extra nucleotide base is
added to the DNa sequence. (9) - an individual who harbours a particular disease causing
microorganism without ill-effects and can transmit the
microorganism to others. (7) - a dorsally placed structure of the inner ear, from which
the semicircular canals arise. (7) - a sugar molecule that contains three carbon atoms. (6)
- The region in a prokaryote cell, which contains the
genetic material DNa, and controls the activity of cell.
(8) - an antigen that elicits a hypersensitive immune res-
ponse. (8) - The name of the scientist who first identified DNa as an acidic
substance present in nucleus and named it as nuclein. (8) - animals that eat vegetation, such as an ungulate. (10)
- a plasmid vector that contains origin of replication from a
phage in addition to that of a plasmid, and serves as cloning,
expression, riboprobe and sequencing vector. (8) - The middle section of the alimentary canal of vertebrates. (6)
- The geological era which is often known as the `age of
reptiles’. (8) - a hormone produced by the anterior lobe of the pituitary gland,
which stimulates the interstitial cells of the testes in males to
secrete testosterone. (4) - earwax, which is secreted by ceruminous glands in the auditory
meatus of the outer ear. (7) - One of the four chambers of the stomach in ruminants. (5)
- The duct in mammals that conveys urine from the bladder to be
discharged to the outside of the body. (7) - a type of natural selection that operates when an environmental
factor shows distinct variations, and favours the extremes of a
phenotype in a population. (10) - a catalyst in metabolic reactions. (6)
DOWN - a small muscular blood vessel that transports blood from the
arteries to the capillaries. (9)