Which of the following statement about an arthropod exoskeleton is incorrect?
Rigor mortis i.e, stiffening of body after death results from__________?
Exoskeleton of a marine snail is composed of__________?
Which of the following step occurs immediately after binding of Ca2+ with troponin molecule during muscle contraction.
What happens during muscle contraction to the length of each myosin and action filament?
Which one of the following forms the blk of exoskeleton of an arthropod?
If a cross section of a sarcomere is seen, each myosin is surrounded by how many actin molecules:
Which of the following statement is incorrect about Molluscans?
The most important function of troponin is__________?
In an annelids, the contraction of circular muscle results in__________?
Diameter of thick filament is__________?
Which of the following animal has a hydrostatic skeleton?
A smallest contractile unit of muscle contraction called sarcomere is the area between two:
Gibberellins is an example of__________?
Which of the following statements is incorrect about skeletal muscle fibers?
Epinasty is controlled by__________?
Why skeletal muscles are called striated muscles?
Roots of a plant show__________?
The contraction of which of the following muscle fibers, is controlled by hormones?
Rapid movement of leaves of mimosa on touching is an example of __________?
Which of the following is a uni-nucleated cell?
The place of attachment of leaf with the shoot is called__________?
Bony callus formation completes in__________?
Which of the following cells are involved in soft callus formation?
Sperms of liverworts, mosses, ferns move towards archegonia, in response to uncleic acid released by the ovum. This is an example of __________?
A fracture hematoma has__________?
Vascular Cambium initially appears as actively dividing cells between__________?
If two ends of fractured bone are opened and kept united via screws and wires drilled in bone substance. This step in fracture repair is called__________?
Which of the following statements about fractures in old age is incorrect?
An increrase in plant girth due to activity of __________ is called secondary growth?
Which of the following statement about osteoporosis is incorrect.
Among the followings which is the most longest supportive cell?
Which of the follwing is a childhood disease resulting from nutritive Ca2+ deficiency?
Secondary cell wall of sclerenchyma cells is impregnated with__________?
Which of the following hormone is predominantly responsible for bone weakening in older women?
In which of the following joint muscles are arranged in the same plane as that of joint?
Higher turgor pressure in a plant cell is maintained by__________?
Fibrous capsule surrounding synovial joints may be thickened at some places to form:
Joint between two parietal bones, which is infact immovable one is an example of_________?
Which of the following plays the major role in providing support to young herbaceous parts of the plant?
A joint formed between humerus, radius and ulna is an example of__________?
Vocal cords are stretched across_______?
In most birds air sacs are __________ in number?
Parabronchi are open at __________ end/s?
Respiratory distress syndrome is common especially for infants with a__________?
Gaseous exchange through the skin is known as __________ respiration?
All of the following contain cartilage except:__________?
Voice box is another name used for__________?
The blood enters the __________ side of heart ?
Which of the following animals has a respiratory system with one way flow of the air through the lungs, and the air is renewed after inspiration?
When abdomen expands, the number of spiracles open is__________?

Ecdysone is_________________?

A. An enzyme that digest endocuticle during an arthropodal ecdysis
B. A newly formed exoskeleton in authropods
C. A hormone that regulates moulting in arthropods
D. A process that involves moulting

Correct Answer: A hormone that regulates moulting in arthropods ✔

Last Updated: May 23, 2018