Easy Tutorial
For Competitive Exams
UPSC Biology Page: 3
4054.An egg laying mammal is
Delphinus
Macaca
Ornithorhynchus
Macropus
4055.In sharks, one of the following is absent
Claspers
Placoid scales
Cartilaginous endoskeleton
Air bladder
4056.The devil fish and sea hare are
Molluscs
Crustaceans
Coelenterates
Marine fish and mammal
4057.Endothelium of blood vessels is made up of
Simple cuboidal epithelium
Simple squamous epithelium
Simple columnar epithelium
Simple non-ciliated columnar
4058.In humans, sphincter of Oddi is associated with the opening of
Common hepatopancreatic duct
Pyloric stomach
Oesophagus
Colon
4059.In human beings, the duration of cardiac cycle is
0.08 second
0.5 second
0.8 second
8.0 second
4060.In which part of nephron, reabsorption is minimum from filtrate
Henle's loop
Proximal convoluted tubule
Distal convoluted tubule
Collecting duct
4061.Which hormone level reaches peak during luteal phase of menstrual cycle
Luteinizing hormone
Progesterone
Follicle stimulating hormone
Estrogen
4062.The largest subunit of prokaryotic ribosomes is
30S
40S
50S
60S
4063.Which of the following is a part of endomembrane system of eukaryotic cell
Peroxisomes
Chloroplasts
Mitochondria
Golgi complexes
4064.Inflammation of joints due to accumulation of uric acid crystals is called as
Gout
Myasthenia gravis
Osteoporosis
Osteomalacia
4065.Chromosomes are visible with chromatids at this phase of mitosis
Interphase
Prophase
Metaphase
Anaphase
4066.Inheritance of ABO blood grouping is an example of
Dominance
Codominance
Incomplete dominance
All of these
4067.In a dihybrid cross between RRYY and rryy parents, the number of RrYy genotypes in F2 generation will be
4
3
2
1
4068.Identify a 47, + 21 disorder from the following
Downs syndrome
Turners syndrome
Phenylketonuria
Klinefelter's syndrome
4069.Uracil is present in RNA at the place of
Adenine
Guanine
Cytosine
Thymine
4070.Copying genetic information from one strand of DNA into RNA is
Translation
Transcription
Transformation
Transduction
4071.Millers closed flask contained
CH4
H2
NH3 and Water vapour
All of these
4072.Change of frequency of alleles in a population results in evolution is proposed in
Darwins theory
Lamarcks theory
Hardy-Weinberg principle
De Vries theory
4073.One of the following is the vestigial organ in human beings
Nictitating membrane
Spleen
Femur
Tibia
Share with Friends