.Select the odd one w.r.t classification of Mango
(1) Family- Poaceae
(2) Order-Sapindales
(3) Class-Dicotyledonae
(4) Division- Angiospermae
Answer ▽ ✅Verified
Answer (1) Mango belongs to family-Anacardiaceae
The scientific name of mango is written
as Mangifera indica.
Let us see how it is a binomial name. In this name
Mangifera represents the genus while indica, is a particular species, or a
specific epithet.
Name of the author appears after the specific epithet, i.e., at the end of
the biological name and is written in an abbreviated form, e.g., Mangifera
indica Linn. It indicates that this species was first described by Linnaeus.
Common Name=Mango
Biological Name= Mangifera indica
Genus= Mangifera
Family-Anacardiaceae
order= sapindales
Class-Dicotyledonae
Division-Angiospermae
THE FRUIT
In mango and coconut, the fruit is known as a drupe.
They develop from monocarpellary superior ovaries and are one seeded.
In mango the pericarp is well differentiated into an outer thin epicarp, a
middle fleshy edible mesocarp and an inner stony hard endocarp. In
coconut which is also a drupe, the mesocarp is fibrous.
Ethylene is used to initiate flowering and for synchronising fruit-set
in pineapples. It also induces flowering in mango.
The number of ovules in an ovary may be one (wheat,
paddy, mango) to many (papaya, water melon, orchids).
As ovules mature into seeds, the ovary develops into a fruit, i.e., the
transformation of ovules into seeds and ovary into fruit proceeds
simultaneously. The wall of the ovary develops into the wall of fruit called
pericarp. The fruits may be fleshy as in guava, orange, mango, etc., or
may be dry, as in groundnut, and mustard, etc. Many fruits have evolved
mechanisms for dispersal of seeds.
APOMIXIS AND POLYEMBRYONY
Although seeds, in general are the products of fertilisation, a few flowering
plants such as some species of Asteraceae and grasses, have evolved a
special mechanism, to produce seeds without fertilisation, called apomixis.
Thus, apomixis is a
form of asexual reproduction that mimics sexual reproduction. There are
several ways of development of apomictic seeds. In some species, the
diploid egg cell is formed without reduction division and develops into
the embryo without fertilisation. More often, as in many Citrus and Mango
varieties some of the nucellar cells surrounding the embryo sac start
dividing, protrude into the embryo sac and develop into the embryos. In
such species each ovule contains many embryos. Occurrence of more
than one embryo in a seed is referred to as polyembryony.
If these hybrids are
made into apomicts, there is no segregation of characters in the hybrid
progeny. Then the farmers can keep on using the hybrid seeds to raise
new crop year after year and he does not have to buy hybrid seeds every
year. Because of the importance of apomixis in hybrid seed industry,
active research is going on in many laboratories around the world to
understand the genetics of apomixis and to transfer apomictic genes
into hybrid varieties.
It is general knowledge that mango trees do not and cannot grow
in temperate countries like Canada and Germany.
Commensalism:
This is the interaction in which one species benefits
and the other is neither harmed nor benefited. An orchid growing
as an epiphyte on a mango branch, and barnacles growing on the
back of a whale benefit while neither the mango tree nor the whale
derives any apparent benefit. The cattle egret and grazing cattle in
close association, a sight you are most likely to catch if you live in
farmed rural areas, is a classic example of commensalism. The
egrets always forage close to where the cattle are grazing because
the cattle, as they move, stir up and flush out insects from the
vegetation that otherwise might be difficult for the egrets to find
and catch. Another example of commensalism is the interaction
between sea anemone that has stinging tentacles and the clown
fish that lives among them. The fish gets protection from predators
which stay away from the stinging tentacles. The anemone does
not appear to derive any benefit by hosting the clown fish.
An orchid plant is growing on the branch of mango tree. How do you describe this interaction between the orchid and the mango tree?
Genetic diversity:
A single species might show high diversity at
the genetic level over its distributional range. The genetic variation
shown by the medicinal plant Rauwolfia vomitoria growing in
different Himalayan ranges might be in terms of the potency and
concentration of the active chemical (reserpine) that the plant
produces. India has more than 50,000 genetically different strains
of rice, and 1,000 varieties of mango.
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