Moderate
820 likes
Question
Which of the following are the refractive media of the eye?
(a) Cornea, aqueous humour, lens, vitreous humour
(b) Retina, aqueous humour, lens, vitreous humour
(c) Cornea, retina, lens, iris
(d) Aqueous humour, iris, vitreous humour, cornea
WBBSE
Class X
Life Science
01 (d) Nervous System
01 Mark
2025
Answer
(a) Cornea, aqueous humour, lens, vitreous humour
Explanation:
The refractive media of the human eye include the cornea, aqueous humour, lens, and vitreous humour—these structures refract and focus light rays on the retina. The retina and iris are not refractive media; they play roles in receiving light and controlling pupil size, respectively.
Related Questions
More WBBSE Moderate level questions
1/12
Easy
Q.
Write one function each of the following five parts of eyeball of human eye: (a)...
A.
Parts Functions (a) Cornea Refracts light rays entering the eye. (b) Lens...
View Question
Moderate
Q.
Prepare a list of animals being endangered by poaching. Which environmental factors have the potentialities...
A.
Animals endangered due to poaching Poaching for skin, fur, horns, tusks, bones,...
View Question
Moderate
Q.
Explain the relationship between the decline in the number of biodiversities with that of over-exploitation...
A.
Relationship: Over-exploitation refers to the excessive use of biological resources beyond their...
View Question
Moderate
Q.
Show the major events of evolution with the help of a chart. What are the...
A.
The major events of evolution with the help of a chart Roles...
View Question
Moderate
Q.
Write three inferences deduced from the observations as mentioned in Darwin’s theory of origin of...
A.
Observation Inference Prodigious reproduction There is a struggle for existence due to...
View Question
Moderate
Q.
Black-smooth hair is produced in F₂ generation resulting from a cross between pure black-rough haired...
A.
Genetic counselling detects carrier status in parents for autosomal recessive diseases like...
View Question
Moderate
Q.
Mention the dominant and recessive traits of two characters related with seed and one character...
A.
Here are two seed-related characters commonly used in Mendel’s experiments, showing their...
View Question
Moderate
Q.
How is micropropagation performed? Which phenomena occur during telophase stage of mitosis in an animal...
A.
Micropropagation is rapid vegetative multiplication using tissue culture technique. It is performed...
View Question
Moderate
Q.
Establish the interrelationship between gene, DNA and chromosome. What are the advantages of vegetative propagation?
A.
Chromosomes are the gene-bearing nucleoprotein filaments present within the nucleus, endowed with...
View Question
Moderate
Q.
Describe the following features occurring during anaphase stage of animal cell division: (a) Division of...
A.
Anaphase ensures equal chromosome distribution. (a) Centromere divides longitudinally into two. (b)...
View Question
Hard
Q.
What is the role of cryopreservation in the conservation of biodiversities? What information may be...
A.
Cryopreservation is a method of ex-situ conservation in which living biological materials...
View Question
Easy
Q.
Prepare a list of diseases linked with pollution as observed by a doctor among her...
A.
Pollution causes respiratory, skin and other diseases via air, water toxins. A...
View Question