Model Paper 3 — NEET STD 11 Science — Question

Azolla possesses symbiotic association with

In ureotelic animals, urea is formed by

Why do we pass more urnie in wet and cold season

Anatomically, the ear can be divided into three major sections called the outer ear, the middle ear and the inner ear. Which of the following statements are correct for inner car ?
(i) The organ of Corti is a structure located on the basilar membrane which contains hair cells that act as auditory receptors.
(ii) A large number of processes called stereo cilia are projected from the apical part of each hair cell.
(iii) Above the rows of the hair cells is a thin elastic membrane called tectorial membrane is present.
(iv) The vestibular apparatus is composed of three semi-circular canals and the otolith organ consisting of the saccule and utricle.
(v) Semi-circular canals contain a projecting ridge called macula.
(vi) The saccule and utricle contain a projecting ridge called cristae.
(vii) The cristae and macula responsible for maintenance of balance of the body and posture.

Which of the following statement(s) is/are true for menstrual cycle ?
(i) It occurs in female of all mammals,
(ii) In human non-pregnant normal females, ovulation is repeated at an average interval of about 28/29 days.
(iii) In human beings, ovulation cycles ceases around 50 years of age, that is termed as menopause.
(iv) Lack of menstruation is always an indicator of pregnancy.
(v) Menstruation only occurs if the released ovum is fertilised.
(vi) Menarche may also be due to stress, poor health.

All functions of the body are regulated and integrated by

Amoeba shows movement with help of

An animal having diploblastic acoelomic condition is