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.
Blunt or Non-penetrating Injury When body is struck by a blunt object such as steering wheel or blows to chest with blunt object. External injury may appear minor but the
Explain Simple Staining Technique? Here single staining agent is used to determine the size, shape and arrangement of bacterial cells. It is simple and easy to perform. Dried s
Degrade a monoglyceride that has an 18-carbon fatty acid attached to it by Ester bonds. You will have to degrade the glycerol component followed by the fatty acid in presence of O2
Embryo-sac : Embryo-sac is formed from megaspore mother cell. In embro-sac, there are 7 cells arranged in 3 groups. The 7 cells are one egg (female gamete), 2 synergids,
General characters of aschelminthes
What is yersiniosis? Give its symptoms. Yersiniosis caused by the bacteria Yersinia enterolytica. • Causes severe abdominal pain, fever and diarrhoea.
VENTIL A TIO N OR BREATHING - 15-16 / minute (In Rabbit 36-38). In children 35 / 1 minute. 1 . INSPIRATION In take of air is known as inspiration. First o
What is the difference between analogous and homologous organs? The Characteristics of different species are said to be analogous when having the same biological function, for
What do you understand by Polyp? The sessile, asexual stage in the cnidarian life cycle. In some species they are independent organisms; in others, they form colonies where som
A 48-year-old male patient, who normally enjoys good health, has been admitted to the hospital for the treatment of polycythemia vera. The nurse who is providing care for the patie
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