Tag: biology

Quizzes (1160) Questions (12174)

Questions Related to biology

Multiple choice biology ecology classification hierarchy hierarchy of classification different types of classifications

Which one of the following statements regarding Pomato is correct?

  1. It is a product of somatic hybridization

  2. It is obtained by gene manipulation

  3. It is a natural hybrid product of sexual reproduction

  4. It is the fusion product of archegonia and antheridia
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Pomato is a somatic hybrid produced by the fusion of protoplasts of potato and tomato, which is a technique of somatic hybridization.

Multiple choice biology ecology classification hierarchy hierarchy of classification different types of classifications

Which one of the following is the correct statement about the respective animal(s)? 

  1. Donkey and horse should be considered one single species because they can successfully mate and produce an offspring.

  2. Donkey and horse are two different genuses.

  3. Mule is a separate species.

  4. Mule is neither a donkey nor a horse.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A mule is the sterile offspring of a male donkey and a female horse. It is not a separate species because it cannot reproduce with other mules to maintain a population.

Multiple choice biology diversity in living things and their classification introduction to plant organs and germination seed to plants germination of seeds

Who of the following is associated with the description of life-forms in plants communities?

  1. Tansley

  2. Shelford

  3. Slobodkin

  4. Raunkiaer
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

C. Raunkiaer is a Danish botanist famous for proposing a system of plant life-forms based on the position of the perennating buds relative to the soil surface, which is widely used in plant ecology and community description.

Multiple choice biology diversity in living things and their classification introduction to plant organs and germination seed to plants germination of seeds

Consider the following plants.
a. Curcuma longa
b. Ferula asafoetida
c. Myristica fragrans
d. Smilax aristolochiaefolia
From which of the plants are underground parts used for obtaining spices or products of commercial value?

  1. $1$ and $2$
  2. $3$ and $4$
  3. $1, 2$ and $4$
  4. $1, 2, 3$ and $4$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Curcuma longa (turmeric) and Ferula asafoetida (asafoetida) both utilize underground parts (rhizomes and roots/resins) for commercial value. Myristica fragrans (nutmeg) uses seeds/arils, and Smilax uses roots, but the question asks for specific commercial spices.

Multiple choice biology mendel's law of inheritance mendel's laws laws of inheritance mendel's laws of inheritance

How many different types of phenotypes would be produced in $F _{1}$ progeny in the following cross that obeys Mendel's law of independent assortment $AABBCC\times aabbcc$.

  1. $1$
  2. $8$
  3. $27$
  4. $64$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In a cross AABBCC x aabbcc, all F1 progeny will be AaBbCc. Since all individuals have the same genotype, they will all express the same phenotype.

Multiple choice biology mendel's law of inheritance mendel's laws laws of inheritance mendel's laws of inheritance

Discovery Of Mendels law of segregation required the use of:

  1. dihybrid parental and F1 crosses

  2. plants showing incomplete dominance

  3. test crosses

  4. parental crosses with true-breeding plants followed by crosses with F1 heterozygous plants
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Discovery of mendels law of segregation required the use of parental crosses with true breeding plants followed by crosses with f1 heterozygous plants.

So, the correct option is 'parental crosses with true-breeding plants followed by crosses with F1 heterozygous plants'

Multiple choice biology mendel's law of inheritance mendel's laws laws of inheritance mendel's laws of inheritance

Mendel proposed his 'laws' on the basis of his researches on seven contrasting characters in garden pea which has $14$ chromosomes per somatic cell. If, instead of garden pea, Mendel had chosen to work on seven characters in a plant species having only four chromosomes per somatic cell, then the most likely outcome would have been that.

  1. He would have discovered blending inheritance

  2. He could not have proposed that genes are located on the chromosomes

  3. He might not have discovered the law of independent assortment

  4. He might not have discovered the law of segregation
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Mendel worked with the garden pea, which has 14 chromosomes and 7 linkage groups, corresponding to the 7 traits he studied. If he had used a species with only 4 chromosomes, the number of linkage groups would be fewer than the 7 characters studied, meaning some characters would show linkage and fail to assort independently.

Multiple choice biology mendel's law of inheritance mendel's laws laws of inheritance mendel's laws of inheritance

Which of the following explains how progeny can possess combinations of traits that neither parent possessed?

  1. Polygenic inheritance

  2. Law of independent assortment

  3. Law of independent segregation

  4. Chromosome theory
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Mendel's law of independent assortment states that allele pairs separate and segregate independently of one another during the formation of gametes. So, traits are transmitted to offspring independently of one another and recombinants are seen along with the parental types in the genotype of the next generation. So, progeny can have a new combination of traits that are not seen in either parent. So, the correct option is 'Law of independent assortment'.

Multiple choice biology mendel's law of inheritance mendel's laws laws of inheritance mendel's laws of inheritance

Which of the following is not considered as a law?

  1. Law of dominance

  2. Law of independent assortment

  3. Law of segregation

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The law of dominance is significant and true but is not universally applicable. Only Law of independent assortment and Law of segregation are considered to be laws. The third one is considered as a basic principle but not a genetic law of Mendel. Therefore, (a) is the correct answer.