Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Photoperiodism
Activity like breeding and migration in animals; flowering, seed germination in plants are regulated by the length of daily period of light and darkness. This behavioural phenomenon is known as photoperiodism. For example, plants such as radish, potatoes and spinach bloom when the light duration is more than 12 hours/day. Such plants are called long day plants. Cereal, tobacco, dahelia and many other plants bloom when light duration is less than 12 hrs/day. These are called short day plants. Such responses show that plants have built-in mechanisms for measuring the duration of illumination and darkness and hence flower in a specific seasons.
Similar photoperiodic responses are observed in animals. These may be diurnal, lunar or annual. Reproduction and migration in birds are such annual photoperiodic responses. From such responses it seems that distribution of some plants and animals may be restricted because the necessary photoperiodic stimulus is available only at certain latitudes.
Define the Surgery Process for Cancer Patient? Surgery is generally conducted in the absence of metastasis i.e. when a tumor is localized. Nutrition support would vary dependin
Explain The ECG and cheast X- Ray? The ECG and Chest X-ray: If there is a suspicion of heart disease on basis of the history or physical examination an ECG and a chest X-ray
Phytoplankton Stage - Hydrarch In this initial stage, the pond water is poor in nutrients and is devoid of much life. At this stage, the water is incapable of supporting large
MUSCLES - In eye orbit, eye ball is fixed by 6 skeletal muscles attached to 3rd, 4th & 6th cranial nerves (motor). 4 - straight or recti muscles are present. 2 - oblique
1. Carbon monoxide (CO): It is colourless, odourless, tasteless gas and is not soluble in water. Source: CO is produced due to: (i) Incomplete combustion of fuels
Why is the reaction of ethane and chlorine not a free-radical addition reaction? Because no free radicals are include in the reaction process only carbo cations and Cl- are evo
Explain the following and give their values in a normal human adult: a) Tidal volume b) Expiratory reserve volume c) Inspiratory capacity.
What is Coelom - Body Cavity explain? Among the bilaterally symmetrical organisms, animals have three different types of body plans with respect to body cavities. The term coel
Define about the Ascorbic acid (vitamin C)? Ascorbic acid was discovered as the anti-scurvy vitamin. Vitamin C (chemical names ascorbic acid and ascorbate) is the six-carbon la
Why does DNA twist? If it did not twist, would you expect it to fit into the miniscule cell? As we all know, if we join all of the DNA molecules from a person's body end to en
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd