NTSE SAT Biology Papers 13
NTSE SAT Biology Papers 13
This is NTSE SAT Biology Papers 13.. There are 15 questions in this test with each question having around four answer choices.
Questions & Answers
1
An analysis of soil sample revealed 0.1 mg of a pesticide was found in grams. However in the adipose tissue of birds the concentration was 2 mg. The reason for this is the phenomenon known as
- ABio-translocation
- BBio-multiplication
- CBio-magnificationCorrect
- DBio-absorption
2
Diseases that spread by vectors such as mosquitoes are
- AEncephalitis and MalariaCorrect
- BTuberculosis and sleeping sickness
- CSyphilis and AIDS
- DKala-azar and SARS
3
Which one of the following is correct route for passage of sperms?
- ATestes – scrotum – vasdeferens – urethra – penis
- BScrotum – testes – urethra – vasdeferens – penis
- CTestes – vasdeferens – urethra – penisCorrect
- DTestes – vasdeferens – urethra – seminal vesicles
4
Suggest which among the following is NOT a function attributed to endoplasmic reticulum
- ABiogenesis of membranes
- BManufacture of fat and lipid molecules
- CDigestion/egestion of foreign materials outside the cellCorrect
- DDetoxification of poisons and drugs
5
In nitrogen cycle, atmospheric nitrogen is fixed by bacteria and converted into ammonia. Ammonia is further converted into order forms of nitrogen. At the end of the cycle it returns to the it returns to the atmosphere by the process of:
- AAmmonification
- BAssimilation
- CDenitrificationCorrect
- DNitrification
6
Cell organelles that are involved in the waste disposal system of the cell are:
- AChromosomes
- BRibosomes
- CGolgi apparatus
- DLysosomesCorrect
7
Sequence of events which occur in a reflex action we
- ACNS – sensory neuron – motor neuron – effector muscle
- BReceptor – motor neuron – CNS – sensory neuron – effector muscle
- CEffector muscle – CNS – sensory nerve – sensory organ
- DReceptor organ – sensory neuron – CNS – motor neuron – effector muscleCorrect
8
Movement of food in digestive tract is due to
- AConcentration gradient
- BPeristalsisCorrect
- CSecretion
- DVilli
9
A pea plant with round green (RRyy) pea seed is crossed another pea plant with wrinkled yellow (rrYY) seeds. What would be the nature of seed in the first generation (F1 generation)?
- ARound green
- BWrinkled yellow
- CRound yellowCorrect
- DWrinkled green
10
Some organisms are sensitive to different levels of air pollution and are used as pollution-indicators. Suggest which among the following fits into the category
- ALichensCorrect
- BFungi
- CFresh water algae
- DBacteria
11
A group of laboratory mice having tails are bred together and their progeny studied. The progeny had tails. However, scientist surgically removed the tails of the progeny and again bred them for four successive generations. What do you think would be the nature of the new progeny?
- AAll mice born will have tailsCorrect
- BThe ratio of tail less to tailed mice will be 1:4
- CThe ratio of tail less to tailed mice will be 1:3
- DAll mice born will have no tails
12
Which of the following statements is NOT correct?
- ACartilage smoothens bone surface at joints
- BTendons connect muscles to bones
- CTendons are tissues with great strength and flexibility
- DBones are connected to each other by tendonsCorrect
13
Which of the following statements in NOT true about evolution?
- AEvolution is not always progressive series of changes that occur in organism
- BHuman beings have not evolved from chimpanzeesCorrect
- CTime dating and fossil studies help in understanding of evolution
- DEvolution leads to generation of diverse forms of life
14
A segment of DNA contains 1200 nucleotides, of which 200 have adenine base. How many cytosine bases are present in this segment of DNA?
- A200
- B100
- C800
- D400Correct
15
You are observing a non-chlorophyllous, eukaryotic organism with chitinous cell wall under a microscope. You shall describe the organism as a
- Aprotozoa
- Bbacterium
- Calga
- DfungusCorrect