Biology Today - May 2018

ACROSS

1. The process of maintaining the fertilised eggs of birds at
   the optimum temperature for successful development
   of embryos. (10)


2. A tadpole-like larval stage of trematode worms that
   develops in the body of a mollusc. (8)


3. An evolutionary process in which larval or juvenile
   features of an ancestral organism are displaced to the
   adult form of its descendants. (14)


4. Inflammation of the gums characterised by the
   discharge of pus and loosening of teeth. (9)


5. The unossified part of skull of a new born. (10)


6. A protein found in many eukaryotic cells, that possesses
   ATPase activity and binds to microtubules. (6)


7. An infectious RNA particle that causes diseases mainly
   in plants. (6)


8. The highest taxonomic category, consisting of one or
   more kingdoms. (6)
   DOWN


9. An alkaloid widely used in plant breeding for doubling
   the chromosome number and also known as mitotic
   poison. (10)


10. The depression on upper lip and below the nose commonly
    found in mammals. (8)


11. A dimeric protein produced by the follicular cells of
    the thyroid gland and used entirely within the thyroid
    gland. (13)


12. A structure by which two adjacent epithelial cells
    are attached, formed from protein plaques in the cell
    membranes linked by filaments. (10)


13. A lens in compound microscope that is used to collect
    and focus light on the specimen. (9)


14. The scientist who discovered Kappa particles in Paramecium. (9)


15. Alternate name of fermentation. (7)

CROSSWORD

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AI am a red or brown respiratory pigment present in coelomic fluid in certain sea urchins.

C I am a type of hallucinogenic drug that is derived from cactus.

D

I am a process by which the genetic material carried by an individual cell is altered by the incorporation of foreign

DNA into its genome.

E I am the smallest angiospermic parasite commonly known as “dwarf mistletoes”.

I obtained proteinoid microspheres by heating a mixture of dry amino acids to 130 – 180°C and later cooling them in

water.

B

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