CBSE 11TH BIOLOGY - Online Test
Q1. The molecules which move from higher to lower regions are called as
Answer : Option C
Explaination / Solution:
In diffusion, molecules move in a random fashion, the net result being substances moving from regions of higher concentration to regions of lower concentration.
Q2. The most abundant type of animal tissue in the complex animals is
Answer : Option B
Explaination / Solution:
The most abundant type of animal tissue connective tissue as it forms variety of tissues such as blood, bone, cartilage, adipose, lymph, tendon and ligament. These connective tissue types perform wide range of functions in the animal body such as giving support, packing, repairing, storing of fat, connecting different organs, etc.
Q3. All prokaryotic, unicellular organisms are included under kingdom
Answer : Option D
Explaination / Solution:
All prokaryotic, unicellular organisms are included in the kingdom Monera. The Eukaryotic unicellular organisms are placed in Protista kingdom.
Q4. Those essential element which occur in 1-10 mg/g of dry matter are
Answer : Option A
Explaination / Solution:
The nutrient required in larger quantity is called macronutrients. Those essential elements which occur in 1-10mg/g quantity is called macronutrients.
Q5. Which layer of alimentary canal is formed of loose connective tissues?
Answer : Option D
Explaination / Solution:
The submucosa consists of a dense and irregular layer of loose connective tissue with blood vessels, lymphatics, and nerves branching into the mucosa and muscular layer. It contains the submucous plexus, and enteric nervous plexus, situated on the inner surface of the muscular layer.
Q6. Part of brain that acts as relay centre to receive and transmit general sensations except smell :
Answer : Option A
Explaination / Solution:
Thalamus is the part of brain that acts as relay centre to receiveand transmit general sensations except smell. Thalamus is located in the forebrain superior to the midbrain.
Q7. The algae that secretes and deposit calcium carbonate over their walls to contribute in producing coral reefs is
Answer : Option C
Explaination / Solution:
Red algae in the order Corallinales , characterized by a thallus that is hard because of calcareous deposits which contribute in producing coral reefs in sea water.
Q8. In prokaryotes, the reserved food material is stored in
Answer : Option B
Explaination / Solution:
Reserve material in prokaryotic cells are stored in the cytoplasm in the form of inclusion bodies.
Q9. What does represent in plant photosynthesis?
Answer : Option D
Explaination / Solution:
The key features of plant photosynthesis were known, namely, that plants could use light energy to make carbohydratesfrom and water, where represents glucose.
Q10. After a forceful expiration :
Answer : Option B
Explaination / Solution:
After a forceful expiration gaseous exchange continues uninterrupted because there is always a residual volume of air that continues the diffusion of gasese.
