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Academia - Collins Scientific Pocket Dictionaries - Biology
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herbivore
herbivore m

Grass eater. Herbivore. An animal that feeds on plants. Herbivores include sheep, rabbits, and cows, and they have dentition adapted to chewing plants and a gut capable of cellulose digestion.

Windows
Gum pad
Breakers
Go
break

Incisors 0/4, canines 0/0, molars 3/3, molars 3/3 (total 32).

Molars predominate over the teeth of herbivores, and canines are usually absent. Herbivores that do not have upper incisors have a hard gum pad that meets the lower incisors for plant gnawing. The lower jaw of most herbivores can move sideways or forwards and backwards, providing a grinding action in the mouth. Sheep are an example of this.


heterotrophic (or holozoic)
heterotrophe

Heterotrophic. Description of organisms that obtain organic compounds (food) through feeding on other organisms. Heterotrophs include all animals, fungi, most bacteria, and a few flowering plants. Heterotrophs are also called food consumers and can be classified into carnivores, herbivores, ommivores, saprophytes, and parasites (compare with autotrophic).


heterozygous (hybrid)
heterozygote

Heterozygous (hybrid). It contains two different alleles for the same gene. See monohybrid inheritance.


holophytic
autotrophe

Autotrophic. See autotrophic.


holozoic
heterotrophe

Heterotrophic See heterotrophic.


homeostasis
homeostasis f

Maintaining consistent conditions within membership.

like :
- Adjust blood glucose level by. insulin insulin
- Controlling the water content of the blood by means of diuretic hormones (ADH).
- Adjusting body temperature using the skin, etc.


homoiothermic
homothermique

Heat homogeneous. Description: Animals maintain a narrow, constant range of body temperature despite environmental fluctuations. Although mammals and birds are often described as warmblooded, they are homeotherms. Compare with poikilothermic and see temperature regulation.


homologous chromosomes
chromosomes mpl homologues

Homologous chromosomes. Pairs of chromosomes come together during meiosis, and these chromosomes carry genes that control the same characteristics. Identical pairs of chromosomes are found in all diploid organisms. One pair comes from a male gamete and the other from a female gamete, and the two pairs unite at fertilization.


homozygous (or pure)
homozygote

Homozygous (or pure). It contains two completely identical alleles for any single gene. See monohybrid inheritance.