In mammals, veins differs from arteries in having? Mark as favorite Copy Link Carry blood away from heart Internal valves Deeply present Thicker walls Check Answer
In which of the following vertebrate group/groups, heart does not pump oxygenated blood to different parts of the body? Mark as favorite Copy Link Amphibians only. Pisces only. Amphibians and reptiles. Pisces and amphibians. Check Answer
What prevents backflow of blood inside the heart during contraction? Mark as favorite Copy Link Thin walls of atria. Thick muscular walls of ventricles. Valves in heart. All of the above. Check Answer
The part of the digestive system where no digestion takes place is? Mark as favorite Copy Link mouth stomach oesophagus ileum Check Answer
Which is the correct sequence of body parts in the human alimentary canal? Mark as favorite Copy Link Mouth -> oesophagus -> stomach -> large intestine -> small intestine Mouth -> stomach -> oesophagus -> smallintestine -> large intestine Mouth -> stomach -> small intestine -> large intestine -> oesophagus Mouth -> oesophagus -> stomach -> small intestine -> large intestine Check Answer
Name the tube which connects the kidneys to the urinary bladder? Mark as favorite Copy Link Tubule Ureter Nephron Urethra Check Answer
Roots of the plants absorb water from the soil through the process of? Mark as favorite Copy Link transpiration osmosis diffusion None of these Check Answer
When a few drops of iodine solution are added to rice water, the solution turns blue- black in colour. This indicates that rice water contains? Mark as favorite Copy Link simple proteins starch complex proteins fats Check Answer
In human each kidney has large numbers of filtration units called ___? Mark as favorite Copy Link Neptune Neurons Nephrons Neutrons Check Answer
The respiratory pigment in human beings is? Mark as favorite Copy Link mitochondria chlorophyll carotene haemoglobin Check Answer