Tag: biology

Questions Related to biology

Match each item in Column I with appropriate one/s in Column II

Column I Column II
A Edward Jenner I Heredity
B Chromosomes II Budding
C Hydra III Protein biosynthesis
IV Smallpox vaccine
V Cell membrane
VI Binary Fission
VII Antibiotics

Select the correct alternative:-

biology diversity in living world characteristics of annelida and arthropoda characteristics of platyhelminthes and aschelminthes basis of classification in animals

  1. A-VII, B-I, C-II

  2. A-IV, B-I, C-II

  3. A-VII, B-V, C-VI

  4. A-IV, B-II, C-VI

Show answer
Correct Option: B
Explanation:
  • The English scientist Edward Jenner (1749 - 1823), regarded as the "Father of Immunology", first introduced the "Smallpox vaccine" in 1796. In fact, the Smallpox vaccine was the first successful vaccine to be invented. Smallpox is a serious contagious disease, caused by the Variola virus. The infected people can have a high fever, body ache, vomiting, and distinctive skin rashes. The smallpox vaccine comprises of live "Vaccinia virus", which quite similar to the Smallpox virus. Jenner's invention eventually led to worldwide immunization by the Smallpox vaccine and eradication of the infectious disease. 
  • Heredity refers to the passing of genetic information from parents to their offspring. Genes are the basic structural and functional units of heredity. In eukaryotic organisms, the Genes remain packaged into large nuclear components, called the Chromosomes. Therefore, each Chromosome comprises many genes. That is why the chromosome is regarded as the "carrier of heredity".   
  • The Coelenterate animal Hydra can reproduce either asexually or sexually. Sexual reproduction in Hydra takes place through the formation of gametes. Asexual reproduction in Hydra is usually seen in the month of summer, especially when the animal is healthy and well-fed. Hydra reproduces asexually by means of Budding. Repeated multiplication of its body-wall cells, results in a bulging appearance near the middle, or the basal part of its body. This bulge grows as a Bud. The wall of the Bud is like an extension of the epidermis and gastrodermis the parent Hydra, while the lumen of the Bud is in continuation with the parent's gastrovascular cavity. A fully grown up Bud finally detaches from the parent's body and gradually develops into an adult Hydra.

If a starfish is cut into pieces, each piece grow into a complete animal. The process is called-

biology diversity in living world characteristics of annelida and arthropoda characteristics of platyhelminthes and aschelminthes basis of classification in animals

  1. Regeneration

  2. Reproduction

  3. Healing of wounds

  4. Growth

Show answer
Correct Option: A
Explanation:
The Starfish or Sea Stars (viz. Asterias, Linckia, Asterina, etc.) are free-living marine Echinoderm animals. They are found in sandy or muddy sea bottoms, or over the rocks, and shells. Some species of Sea Stars have a great power of Regeneration. By this method, they can re-grow an amputated limb or some other body parts. When any arm of a Starfish gets injured, the animal casts off its own arm - a process called Autotomy. Then by the process of Regeneration, the Starfish can re-grow a completely new perfect arm in the place of the injured one. Even, in some Sea Star (viz. Linckia), an arm can even regenerate a complete animal.

The presence of mutable collagenous tissue is an important feature of :

biology diversity in living world characteristics of annelida and arthropoda characteristics of platyhelminthes and aschelminthes basis of classification in animals

  1. Annelida

  2. Echinodermata

  3. Porifera

  4. Molluska

Show answer
Correct Option: A

This organism (animal) is considered as a living fossil as well as a link between annelids and arthropods

biology diversity in living world characteristics of annelida and arthropoda characteristics of platyhelminthes and aschelminthes basis of classification in animals

  1. Peripatus

  2. Tapeworm

  3. Earthworm

  4. Pheretima

Show answer
Correct Option: A
Explanation:

Peripatus is sometimes considered a living fossil because it and other onychophorans are transitional between Arthropoda and Annelida and retain a large. So, the correct option is "A" (Peripatus).

Phylum annelida resembles mollusca in embryonic features because both have __________________.

biology diversity in living world characteristics of annelida and arthropoda characteristics of platyhelminthes and aschelminthes basis of classification in animals

  1. Spiral cleavage and mesoderm formation

  2. Identical conspicuous segmentation in body, muscles

    and nervous system

  3. Meroblastic cleavage and ectoderm formation

  4. Special type of mouth parts

Show answer
Correct Option: A

A useful insect which no longer occurs in wild is________________.

biology diversity in living world characteristics of annelida and arthropoda characteristics of platyhelminthes and aschelminthes basis of classification in animals

  1. Laccifera indica

  2. Drosophila melanogaster

  3. Musca nebulo

  4. Bombyx mori

Show answer
Correct Option: D

The nephridia which are found in a region of intestine are?

biology diversity in living world characteristics of annelida and arthropoda characteristics of platyhelminthes and aschelminthes basis of classification in animals

  1. Integumentary nephridia

  2. Pharyngeal nephridia

  3. Septal nephridia

  4. Both $(1)$ & $(3)$

Show answer
Correct Option: A

In transgenics, expression of transgene in target tissue is determined by?

biology genetics of the future genetically modified animals and crops transgenic organisms biotechnology and its applications

  1. Reporter

  2. Enhancer

  3. Transgene

  4. Promotor

Show answer
Correct Option: A

Match the column.

List-I List-II
(Transgenic plant) (Resistance to)
A) Papaya I) Herbicides
B) Bt cotton II) Ring spot virus
C) Roundup ready soya bean III) Phytophthora
D) Tomato IV) Insects
V) Pseudomonas
biology genetics of the future genetically modified animals and crops transgenic organisms biotechnology and its applications

  1. A-II, B-V, C-I, D-IF

  2. A-II, B-III, C-IV, D-I

  3. A-III, B-I, C-V, D-II

  4. A-II, B-IV, C-I, D-V

Show answer
Correct Option: A

Genetically modified bacteria are used in 

biology genetics of the future genetically modified animals and crops transgenic organisms biotechnology and its applications

  1. Medicine

  2. Patrolling

  3. Cropping

  4. All of the above

Show answer
Correct Option: A
Explanation:

Genetically modified bacteria were the first organisms to be modified in the laboratory, due to their simple genetics. These organisms are now used for several purposes, and are particularly important in producing large amounts of pure human proteins for use in medicine. The drug industry has made use of this discovery in its quest to produce medication for diabetes.