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!
A student set up a potometer in the laboratory and measured the rate of movement of water in the capillary. An average of four readings gave a rate of 50mm per minute. The apparatus was then taken outside, where there was a light breeze. Four more readings were taken without delay. The average of these readings was 130 mm per minute.
The student concluded that exposure of the shoot to rapid air movement had increased the rate of transpiration.
Criticise the design of the experiment and the student's conclusions.
By taking the second set of readings 'without delay', the student did not permit time for a new rate to become established. The student should either have waited for 5 minutes or, better, kept taking readings unless four of them were nearly the similar.
When the apparatus was taken outside, several variables were altered, e.g. light intensity, temperature, humidity and air movement. There is no way of knowing which of these was contributing to the enhanced transpiration rate. It would have been better to vary just one condition whereas remaining in the laboratory, e.g. moving the apparatus from shade to sunlight.
Define observation or inference for barfoed test? 1. Reddish brown precipitate is seen on the sides and bottom of the tube. The precipitate of the sides and bottom indicates th
Define Harvard Step Test - aerobic capacity? In this test, the subject steps on and off an 18-inch platform at a rate of 30 times per minute. The evaluator records the subject'
Q. Clinical manifestations of maple syrup urine disease? Clinical manifestations are expressed upon protein loading or with febrile illness. In most severely impaired enzyme de
Q. For each of the three kinds of life cycles what is the respective ploidy of the individual that represents the adult or lasting form? In the haplontic haplobiontic life cycl
I need help to study for my test and exam
Define Secondary prevention- preventive strategies for food allergy? Secondary Prevention: Attempts to inhibit expression of the disease despite sensitization. These are used f
DNA sequencing is the process of reading the nucleotide bases in a DNA molecule. It includes any technology or method which is used to verify the order of the four bases- guanine,
a) Explain somatic hybridisation? b) Describe the various steps involved in the process. Mention any two uses of somatic hybridisation
'Absolute food safety' is the assurance that damage or injury from use of a substance is impossible. Normal 0 false false false EN-US X-NON
Are sperms being attacked by the body since they are foreign?
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