Pedogenesis is the process of soil formation from parent rock material through weathering. Population, Fossils, and Water are unrelated to the scientific study or formation of soil.
Q2mcq
Initiation codon is :
a.
AUG
Correct Answer
b.
UUU
c.
UAG
d.
UGA
Step-by-Step AI Explanation
Verified Method
AUG is the universal initiation codon that codes for Methionine in eukaryotes and N-formylmethionine in prokaryotes. UUU codes for Phenylalanine, while UAG and UGA are termination (stop) codons.
Q3mcq
A specific place in an ecosystem where an organism lives and performs its function is :
a.
landscape
b.
habitat
c.
biome
d.
niche
Correct Answer
Step-by-Step AI Explanation
Verified Method
A niche refers to the functional role and position of an organism within its environment, including how it uses resources and interacts with other species. Habitat is just the physical place where it lives; biome and landscape are broader ecological scales.
Q4mcq
The genotype of a plant showing the dominant phenotype can be determined by :
a.
Dihybrid cross
b.
Back cross
c.
Pedigree analysis
d.
Test cross
Correct Answer
Step-by-Step AI Explanation
Verified Method
A test cross is specifically used to determine the genotype of an individual displaying a dominant phenotype by crossing it with a homozygous recessive individual. Back cross is broader, and Pedigree/Dihybrid crosses are not standard methods for genotype determination of a single trait.
Q5mcq
Mendel in his classic experiments on pea plants, did not use :
a.
Pod length
Correct Answer
b.
Flowering position
c.
Seed shape
d.
Seed colour
Step-by-Step AI Explanation
Verified Method
Mendel studied seven pairs of contrasting traits in pea plants: stem height, flower color, flower position, pod shape, pod color, seed shape, and seed color. He did not use pod length as a specific variable trait in his classic experiments.
Q6mcq
Tephrosia purpurea is a :
a.
Bio-fertilizer
b.
Bio-pesticide
c.
Bio-herbicide
d.
Green manure
Correct Answer
Step-by-Step AI Explanation
Verified Method
Tephrosia purpurea is a legume commonly used as green manure. It is incorporated into the soil to improve nitrogen content and soil fertility.
Q7mcq
IUCN red list categories has developed criteria for threatened species. This criteria ‘C’ refers to :
a.
Small population size and decline
Correct Answer
b.
Geographic range
c.
Population reduction
d.
Quantitative analysis
Step-by-Step AI Explanation
Verified Method
In IUCN Red List criteria, 'A' refers to population reduction, 'B' refers to geographic range, 'C' refers to small population size and decline, and 'D' refers to very small or restricted populations.
Q8mcq
DNA element with ability to change position is called __________.
a.
Intron
b.
Cistron
c.
Recon
d.
Transposon
Correct Answer
Step-by-Step AI Explanation
Verified Method
Transposons, also known as 'jumping genes', are DNA sequences that can move to different positions within the genome of a single cell. Introns are non-coding regions within genes, cistrons are functional units of DNA (genes), and recons are units of recombination.
Q9mcq
Assertion (A) : Turmeric fights various kinds of cancer.
Reason (R) : Curcumin is an anti-oxidant present in turmeric.
a.
Both (A) and (R) are wrong.
b.
Both (A) and (R) are correct but (R) does not explain (A).
c.
(A) is correct but (R) is wrong.
d.
Both (A) and (R) are correct and (R) explains (A).
Correct Answer
Step-by-Step AI Explanation
Verified Method
Assertion (A) is correct because turmeric contains curcumin, which has anti-cancer properties. Reason (R) is correct as curcumin is a well-known potent antioxidant. The reason explains the assertion because the antioxidant properties of curcumin are responsible for neutralizing free radicals that contribute to cellular damage and cancer development.
Q10mcq
__________ is an example for micronutrient Bio-fertilizer.
a.
Amanita
b.
Aspergillus
c.
Clostridium
Correct Answer
d.
Bacillus
Step-by-Step AI Explanation
Verified Method
Clostridium is a free-living nitrogen-fixing bacterium used as a biofertilizer. Amanita and Aspergillus are fungi, and Bacillus is often used as a biopesticide, but among the choices, Clostridium is specifically recognized for its role in nitrogen fixation in the soil.
🎉 10 Free Sample Solutions Completed
Unlock All 47 Questions & Solutions
Sign up free in seconds to unlock step-by-step AI answers for the remaining 37 questions.
(a)Describe the dominant epistasis with an example.
OR
(b)Draw a Pyramid from following details and explain in brief.
Quantities of organisms are given : Hawks-50, Plants-1000, Rabbit and Mouse-250+250, Pythons and Lizard-100+50 respectively.
Correct Answer & Step-by-Step Solution Locked
Sign in free to reveal the correct answer and AI explanation for this question.
