What is common in all the three, Funaria, Dryopteris and Ginkgo?
presence of archegonia
well developed vascular tissues
Besides paddy fields cyanobacteria are also found inside vegetative part of:
The plant body is thalloid in
Which one of the following is wrongly matched?
Specialized cells for fixing atmospheric nitrogen in Nostoc are
Which of the following are likely to be present in deep sea water?
Which one of the following is not a correct statement?
Botanical gardens have collection of living plants for reference
A museum has collection of photographs of plants and animals
Key is taxonomic aid for identification of specimens
Herbarium houses dried, pressed and preserved plant specimens
Option 2 is correct answer
The common characteristics between tomato and potato will be maximum at the level of their
Syngamy can occur outside the body of the organism in
Monoecious plant of Chara shows occurrence of:
stamen and carpel of the same plant
upper antheridium and lower oogonium on the same plant
upper oogonium and lower antheridium on the same plant
antheridiophore and archegoniophore on the same plant
Meiosis takes place in :
Which one of the following is a hallucinogenic drug?
Lysergic acid diethylamide
Tissue culture technique can produce infinite number of new plants from a small parental tissue. The economic importance of the technique is in raising
Variants through picking up simaclonal variations
Genetically uniform population identical to the original parent
Homozygous diploid plants
Development of new species
Identify the site where Wuchereria bancrofti is normally found on human body
Lymphatic vessels of the lower limbs
Muscles of the legs
Blood vessels of the thigh region
Skin between the fingers
The H-zone in the skeletal muscle fibre is due to:
extension of myosin filaments in the central portion of the A - band.
the absence of myofibrils in the central portion of A - band.
the central gap between myosin filaments in the A-band.
the central gap between actin filaments extending through myosin filaments in the A -band.
The figure shows a diagrammatic view of human respiratory system with labels A, B, C and D. Select the option which gives correct identification and main function and/or characteristic.
D - Lower end of lungs - diaphragm pulls it down during inspiration.
A - trachea - long tube supported by complete cartilaginous rings for conducting inspired air.
B - pleural membrane - surround ribs on both sides to provide cushion against rubbing.
C - Alveoli - thin walled vascular bag like structures for exchange of gases.
The characteristics and an example of a synovial joint in humans is:
lymph filled between two bones, limited movement
gliding joint between carpals
fuid cartilage between two bones, limited movements
fluid filled between two joints, provides cushion
fluid filled synovial cavity between two bones
joint between atlas and axis
Select the correct statement with respect to locomotion in humans:
The joint between adjacent vertebrae is a fibrous joint.
A decreased level of progesterone causes osteoporosis in old people.
Accumulation of uric acid crystals in joints causes their inflammation.
The vertebral column has 10 thoracic vertebrae.
The diagram given here is the standard ECG of a normal person. The P - wave represents the:
End of systole
Contraction of both the atria
Initiation of the ventricular contraction
Beginning of the systole
Select the answer which correctly matches the endocrine gland with the hormone it secretes and its function/deficiency symptom:
Stimulates uterus contraction during child birth
Oversecretion Stimulates abnormal growth
Lack of iodine in diet results in goitre