Tag: biology

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Questions Related to biology

Multiple choice biology biodiversity and its classifications binomial nomenclature nomenclature of organisms naming of the organisms nomenclature in classification

The science of naming plants is known as

  1. Classification

  2. Identification

  3. Nomenclature

  4. Taxonomy
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The art of naming an object is, in fact, a science called nomenclature. Binomial nomenclature is followed worldwide to identify an organism. Every organism has a scientific name, which is a combination of genus and species. Most of these names are in the Latin language. For example, the scientific name of human is Homo sapiens and that of frog is Rana tigrina.

Multiple choice biology pollination structure of male and female reproductive structures structure of ovule gynoecium

Pollen grains of flower pollinated by wind or insects are not ............

  1. Rough and sticky

  2. Large and showy

  3. Rough and dry

  4. Smooth and dry
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Pollen grains to be carried by wind as well as by insects will not be heavy in weight or showy. This is because it causes the wind as well as insects tough to perform pollination. They prefer light weight as well as winged ones.

Multiple choice biology reproduction structure of male and female reproductive structures structure of ovule gynoecium

Wind pollinated plants differ from insect pollinated plants in having ....

  1. Small petals and sticky pollen

  2. Small coloured petals and heavy pollen

  3. Coloured petals and large pollen

  4. No petals and light pollen
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Wind pollinated plants will have light weight pollens which are mostly winged and are thus easy to be carried away by wind. Whereas the plants where the pollinating agents are insects, the petals will be bright and scented so that the insects get attracted to it and acts as pollinator.

Multiple choice biology pollination structure of male and female reproductive structures structure of ovule gynoecium

A very close relationship between flower and pollinating agent is best exhibited by 

  1. Yucca

  2. Avena

  3. Salmalia

  4. Pisum
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A very close relationship between flower and pollinating agent is best exhibited by Yucca as there is a mutually rewarding relationship between Yucca plant and species of moth. They cannot complete their life cycle without each other. The moth lays egg in the locules of the ovary. The larva uses some of the seeds as food. In turn, the flowers are pollinated by the moth. 

So, the correct answer is option A.

Multiple choice biology option b: biotechnology and bioinformatics pcr cutting, insertion and ligation of dna gene cloning procedure

Use of transgenic plants as biological factories for the production of special chemicals is called as

  1. Molecular farming

  2. Molecular genetics

  3. Molecular mapping

  4. Dry farming
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Molecular genetics is the study of structure and function of gene and regulation of its expression. It includes isolation and characterization of genes and identification of regulatory sequences. 
Molecular farming is transfer of genes of industrial importance to plants and animals for production of chemicals, for example production of transgenic animals for increased milk production. 
Molecular mapping is identification of loci of genes and their relative distance on chromosomes; DNA finger printing and genomic imprinting are most common techniques used for the purpose. 
Dry farming refers to crop production without irrigation, i.e., under limited moisture conditions; it is practiced for dry lands where water availability is low. 
Multiple choice biology option b: biotechnology and bioinformatics pcr cutting, insertion and ligation of dna gene cloning procedure

Desired genes have been introduced into transgenic animals to obtain large-scale production of useful biological products encoded by these genes. This approach is generally referred to as _____________.

  1. Hybridoma technology

  2. Molecular farming

  3. Gene therapyx

  4. Downstream processing
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Molecular farming refers to the use of transgenic plants or animals as bioreactors to produce useful biological products, such as proteins or pharmaceuticals.

Multiple choice biology option b: biotechnology and bioinformatics pcr cutting, insertion and ligation of dna gene cloning procedure

A set of genes of cDNA is immobilized on a glass slide and used in transcriptome studies is called 

  1. Proteome

  2. Microarray

  3. DNA chip

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

The transcriptome is the sum of all of its RNA transcripts. The information content of an organism is recorded in the DNA of its genome and expressed through transcription. A microarray is a laboratory tool used to detect the expression of thousands of genes at the same time. DNA microarray is microscopic glass slides that are printed with thousands of tiny spots in defined positions with each spot containing a known cDNA. The cDNA is made immobilized on a glass slide.

So, the correct answer is 'Microarray'.

Multiple choice biology option b: biotechnology and bioinformatics pcr cutting, insertion and ligation of dna gene cloning procedure

A probe which is a molecule used to locate specific sequences in a mixture of DNA or RNA molecules could be __________________.

  1. A single stranded RNA

  2. A single stranded DNA

  3. Either RNA or DNA

  4. Can be ssDNA but not ssRNA
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The molecular probes are usually single-stranded places of DNA (sometimes RNAs) labeled with radioisotopes such as phosphorus- 32. Molecular probes are available for many genetic disorders such as Duchenne muscular dystrophy, cystic fibrosis, Tay-Sachs disease.