MCQ
Spongilla is....
- AAn animal of Coelenterata phylum having polyp form.
- BAn animal of Coelenterata phylum having medusa form
- CAn animal of Porifera phylum having polyp form.
- ✓An animal of Porifera phylum having cnedoblast.
✓
Answer
Correct option: D.
An animal of Porifera phylum having cnedoblast.
d
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→(i) Inheritance is the process by which characters are passed on from parents to progeny.
(ii) Mendel conducted hybridisation experiment on wild peas for seven years and proposed the laws of inheritance in living organisms.
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(v) According to Mendel, characters are controlled by discrete units called factors and now we call them genes.
(vi) Genes which code for a pair of contrasting traits are known as alleles.
(vii) For a character like height, TT and tt are called phenotype of organism while descriptive terms tall and dwarf are genotype.
(viii) Both the alleles can be similar in case of homozygotes (eg. TT or tt) or can be dissimilar as in the case of heterozygote (eg. Tt) for a particular trait (eg. height).
(ix) During the process of meiosis, the segregation of alleles is a random process and so there is a 50% chance of a gamete containing either allele.
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