CBSE Questions for Class 10 Biology Heredity And Evolution Quiz 1 - MCQExams.com

Stete whether the given statement is True or Fale:
Humans will not evolve anymore.
  • True
  • False
F$$_1$$ generation means:
  • First filial generation
  • First seed generation
  • First flowering generation
  • First fertile generation
In heredity, the genes are obtained from
  • Father
  • Mother
  • Both
  • None of the above
State whether the given statement is True or False:
One species is eliminated to give rise to a new one.
  • True
  • False
What are alleles?
  • A pair of genes governing a specific trait such as tallness or dwarfness.
  • Genes which are inactive.
  • Genes determining sex.
  • A pair of genes present only on heterozygous chromosomes. 
The term for similarity in organ structure seen in great diversity is
  • Homology
  • Identical
  • Analogy
  • Symmetrical
The belief that the mother is completely responsible for the sex of the child is wrong, because the child
  • Gets sex determining chromosome only from the mother
  • Develops in the body of the mother
  • Gets one sex chromosome from the mother and the other from the father
  • Gets sex determining chromosome only from the father
State whether the given statement is True or Flae:
Variation does not occur in humans.
  • True
  • False
State whether the given statement is True or False:
Variations occur in animals, but not in plants.
  • True
  • False
The wings of birds are homologous to man's
  • Legs
  • Shoulder
  • Toes alone
  • Fore arms
The wings of an insect and a bat exhibit _______.
  • Homology
  • Analogy
  • Ancestry
  • Tautology
Which of the following plants was selected by Mendel for his experiment?
  • Garden pea
  • Pigeon pea
  • Sweet pea
  • Moong
State whether the given statement is True or False:
The primitive man evolved in Australia.
  • True
  • False
When two individuals are similar in external appearance but differ in their genetic make-up, they are said to have the same:
  • Phenotype
  • Genotype
  • Homozygous
  • Both A and C
Mendelism is related with
  • Heredity in living beings
  • Meiosis during sexual reproduction
  • Mutation in living organisms
  • None of the above
The resemblance of individuals to their progenitors is called:
  • Heredity
  • Genetics
  • Evolution
  • Allele
Which of the following term was used by Mendel for genes?
  • Factors
  • DNA
  • Traits
  • None of the above
What is the percentage of ab gametes produced by parents of genotype $$AaBb$$? 
  • 20
  • 25
  • 50
  • 75
The branch of biology that deals with heredity and variation is:
  • Reproduction
  • Sericulture
  • Genetics
  • Evolution
The number of characteristics of pea plants that Mendel considered for his experiments were:
  • 2
  • 3
  • 4
  • 7
Mendel was born in ______.
  • $$17^{th}$$ century
  • $$18^{th}$$ century
  • $$19^{th}$$ century
  • $$8^{th}$$ century
Genetic constitution of an organism is known as:
  • Genotype
  • Phenotype
  • Trait
  • Allele
In a dihybrid cross between RRYY and rryy parents, the number of RrYy genotypes possible in F$$_2$$ generation will be
  • 4
  • 3
  • 2
  • 1
In the event of crossing of a homozygous tall plant with a dwarf plant, plants in the  F2 generation would be
  • All homozygous dwarf
  • All heterozygous tall
  • One homozygous tall, one homozygous dwarf and two heterozygous tall
  • Two tall and two dwarf
In Mendel's experiment, the characteristics of plants; nature of seed coat, flower colour, the position of flower, pod colour, stem height, etc., chosen by him for his study are known as:
  • Alleles
  • Genotypes
  • Phenotypes
  • Genes
For green coloured pod and rounded seed, which is the functional unit of inheritance?
  • Reproduction
  • Gene
  • Chromosome
  • Generation
The dwarf trait of the F$$_1$$ generation pea plants observed in Mendel's experiments is a ________ character.
  • Recessive
  • Dominant
  • Incomplete dominant 
  • Codominant 
When a gene exists in more than one form, the different forms are called:
  • Heterozygous
  • Complementary genes
  • Genotypes
  • Alleles
When a tall plant with round seeds (TTRR) crossed with a dwarf plant with wrinkle seeds (ttrr), the  F$$_{1}$$ generation consists of tall plants with round seeds. What would be the proportion of dwarf plant with wrinkle seeds in F$$_{1}$$ generation?
  • 1/4
  • 1/16
  • 0
  • 1/2
Mendel's laws of inheritance are applicable only for:
  • Asexual reproduction
  • Sexual reproduction
  • Vegetative propagation
  • All of the above
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