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.
What is triacylglycerol There are 3 hydroxyl groups in a glycerol molecule. If all the three groups are forming ester linkage with fatty acids, the resulting compound is call
What is the valve that separates the aorta from the heart? What is the importance of that valve? The valve among the left ventricle and the aorta is the aortic valve. The aorti
Phylum Mollusca (47,000 species) The segmentation and coelom may not exist. Diversification through modifications of head, foot; mantle and 'radula for feeding. .Visceralorgans
B ov i n e leukemia Bovine leukemia, also known as bovine lymphosarcoma or leucosis, is a lymphoproliferative neoplastic disease of bovines. The virus belongs to genus Delt
Q. Which is the kind of muscle tissue that helps to push the food down through the esophagus? The esophageal wall in its superior portion is made of skeletal striated muscle th
Explain the Obligatory Losses of Nutrients? Obligatory losses of nutrient are defined as 'the losses that occur when an individual is put on a diet free of that nutrient'. For
Q. What is the chemical equation of the aerobic cellular respiration? The chemical equation of the aerobic cellular respiration is given below: C 6 H 12 O 6 + 6 O 2 + 36 A
what is the skeleton in the different classes of coelentrata known
Rifaximin (Xifaxan) An anon-absorbed oral antibiotic, was about as effective as ciprofloxacin for treatment of travelers' diarrhea, mostly caused by E. coli. It is not effecti
Q. Symptoms of gastro oesophageal reflux disease? Most commonly, people with GERD complain of heartburn, a painful or uncomfortable feeling in the chest, which may radiate to t
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