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!
Entomophily - Cross-pollination
It involves insects to carry the pollen to achieve pollination. Salvia exhibits a specialised 'tumapipe' floral mechanism that signifies classic adaptation for bee pollination. In Salvia the corolla is bilipped and the stamens are attached to corolla tube. Only one-half of each anther is fertile, the other half being sterile joins together to form a sterile plate of tissue placed above the lower lip at the mouth of the flower. However, the fertile part lies under the hood of the upper lip of the corolla.
When a bee visits the flower for nectar it pushes against the sterile plate which consequently brings down the fertile anthers on its back dusting it with pollen. When the bee visits another flower, the forked stigmas picks up the pollen from the back of the insect. Plants that are pollinated by insects often have predominantly yellow or blue petals. Among insects bees and butterflies do not perceive color in the same manner as the humans. They are able to see in the ultraviolet range of the electromagnetic spectrum, an area that is invisible to human eye. They see blue and yellow flowers differently than humans. Red emerges out black to them. Consequently, flowers that are pollinated by insects are not usually red. Many insect-pollinated flowers have dramatic ultra-violet markings, that are invisible to us but direct the insect to the flower, where pollen or nectar may be located. Insects comprise a well developed sense of smell.
The common nitrogen-fixer in paddy fields is: 1. Rhizobium 2. Azospirillum 3. Oscillatoria 4. Frankia Azospirillum is the common nitrogen-fixer in paddy fields
yes
Q. How are the nervous and the symmetry system characterized in echinoderms? Adult echinoderms, along with cnidarians, are the animals that present radial symmetry that is thei
Q.Define Cardiac catheterization and angiography? The purpose of this unit is to give you an overview and insight into the world of Cardiac Catheterization and Angiography. Thi
Q. Define Pacinian corpuscules? Pacinian corpuscules are an example of sensory receptors scattered deep in the subcutaneous tissue underlying skin or in viscera. These mech
Q. Which are the subproducts of the photochemical phase that are essential for the chemical stage of photosynthesis? The chemical stage of photosynthesis depends on ATP and NAD
What is Splitin first heart sound ? In complete RBBB, due to delay of tricuspid closure, the split is wide. In complete LBBB, due to delay of mitral closure the S I is single.
Protein Classification Based on Shape There are three types of proteins on the basis of shape - Fibrous, Globular, Intermediate 1 . FIBROUS PROTEINS They ar
what additional substance does a plant need to male amino acids and proteins from glucose
Disorder of Platelets - Purpura Purpuras are bleeding disorders characterised by petechiae and ecchymosis which may be due to deficiency in either, the number or quality of
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: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd