CBSE 11TH BIOLOGY - Online Test
Q1. Lymph will transport :
Answer : Option C
Explaination / Solution:
Fats are absorbed through lymph in the lacteals present in the intestinal villi.
Q2. How many net ATP are produced in Glycolysis?
Answer : Option B
Explaination / Solution:
At the end of glycolysis pathway, 2 net ATP molecules at step 6 and step 9 are produced.
Q3. A lateral branch with short internodes and each node bearing a rosette of leaves and a tuft of roots is found in
Answer : Option C
Explaination / Solution:
A lateral branch with short internodes and each node bearing a rosette of leaves and a tuft of roots is found in aquatic plants such as Pistia and Eicchornia.
Q4. In which stage, the cells remain metabolically active but do not proliferate?
Answer : Option C
Explaination / Solution:
In Go stage the cells are in a metabolically active state but do not divide unless there are some abnormal genes which reverses the same. This stage is also called quiscent stage. Examples human nerve cells.
Q5.
In the human kidney :
i. outer zone is called medulla and inner zone is called cortex.
ii.cortex extends between medullary pyramidsas renal columns of Bellini.
Answer : Option C
Explaination / Solution:
Inside the kidney, there are two zones, an outer cortex and an inner medulla. The cortex extends in between the medullary pyramids as renal columns called columns of Bertini.
Q6. Which is not the function of parenchymatous cells?
Answer : Option A
Explaination / Solution:
The parenchyma performs various functions like photosynthesis, storage, secretion.
Q7. The phenomenon of heterophyll is an example of
Answer : Option C
Explaination / Solution:
Plants follow different pathways in response to environment or phases of life to form different kinds of structures. This ability is called plasticity. This phenomenon of heterophylly is an example of plasticity.
Q8. Living things differ from non-living things in a manner that
Answer : Option C
Explaination / Solution:
The cellular level organisation of the body is the defining feature of life forms or living things. Hence, the correct option is Living things have different level of organisation.
Q9. Polymerisation of actin monomers involves ATP hydrolysis as shown in the following figure : [choose the correct one]
Answer : Option C
Explaination / Solution:
Each ‘F’ actin is a polymer of monomeric ‘G’ (Globular) actins.
Q10. The net direction and rate of osmosis depends on
Answer : Option D
Explaination / Solution:
The diffusion of water across a semi-permeable membrane from high concentration of water (or low solute concentration) to low concentration of water (or high solute concentration) is called osmosis.
The net direction and rate of osmosis depends on two factors: concentration gradient and pressure gradient.
