Biology - Online Test
Q1. Number of glucose molecule required to produce 38 ATP under anaerobic condition is
Answer : Option C
Explaination / Solution:
During anaerobic respiration only two molecules of ATP is produced by each molecules of glucose.
So, 19 glucose molecules are required to produce 38 ATP molecules.
Q2.
ECOSAN (compost toilets) is about
(i) minimising unnecessary water use
(ii) household and personal hygiene
(iii) maximising recycling and reuse at domestic level of grey water
Answer : Option C
Explaination / Solution:
Ecological sanitation (Ecosan) is a concept that treats various types of waste generated by us as a resource which can be safely collected, treated and reused to prevent pollution of water bodies and the environment.
It minimize unnecessary water use, house hold and personal hygiene and maximizing recycling and reuse at domestic level of grey water.
Q3. Small disc like structures that occur in the centromere are
Answer : Option A
Explaination / Solution:
Small disc-shaped structures at the surface of the centromeres are called kinetochores. These structures serve as the sites of attachment of spindle fibres (formed by the spindle fibres) to the chromosomes.
Q4. The palindromic sequence out of the given options is
Answer : Option D
Explaination / Solution:
Palindromic sequence is the sequence which reads same from left to write or from right to left. MADAM is an example of palindromic sequence.
Q5. If kidney tissues are supplied with blood low in oxygen then :
Answer : Option C
Explaination / Solution:
If Kidney tissues are supplied with blood having low oxygen in it then tubular reabsorption get stopped as energy is required for active absorption.
Q6. What was the resultant found in place marked E?
Answer : Option C
Explaination / Solution:
In Urey and Miller’s experiment the product formed after the continuous sparking in the mixture of gases at high temperature were some amino acids like glycine and alanine. Sugar and nitrogenous base were also obtained from same set up by some other scientist.
Q7. In which type of placentation, the ovary is unilocularwith a single ovule?
Answer : Option D
Explaination / Solution:
In basalplacentation, the placenta develops at the base of ovary and a single ovule is attached to it,
Q8. Stem of grasses and related plants elongate by the activity of
Answer : Option A
Explaination / Solution:
Grasses belongs to monocotyledonous angiosperms in which secondary growth do not occurs. Plants elongate by the activity of both apical and intercalary meristem.
Q9. Separate xylem and phloem bundles are known as
Answer : Option C
Explaination / Solution:
Separate xylem and phloem bundles are found in dicotyledonous roots. This kind of vascular bundle is called radial vascular bundle.
Q10. A group of plants with similar traits of any rank is
Answer : Option C
Explaination / Solution:
Each category in taxonomic hierarchy represents a rank and is commonly termed as taxon. Hence, the correct option is Taxon.
