Can White leaves photosynthesize?
Plants, like some types of hosta, have variegated leaves with large areas of white and green. Others, like caladium, have mostly white leaves that contain very little green color. In reality, the leaves of these plants contain chlorophyll and use the process of photosynthesis to produce energy.
Why did the fresh leaves in water that were in the dark have little to no bubbles on their surface?
If you look closely at the leaves that were kept in the dark, however, you won’t see any bubbles. This shows that without sunlight the plant does not have the energy it needs for photosynthesis, thus it can’t split apart the atoms of the H2O molecules and there are no oxygen atoms to escape through the leaves.
How do variegated leaves perform photosynthesis?
Some plants have variegated leaves, with patterns of white and green. In these plants only the green parts of the leaf can photosynthesize, because the white parts have no chlorophyll. Water – this is absorbed by the roots and sent up to the leaves through the xylem part of the plant’s vascular tissue.
How do veins help with photosynthesis?
Veins are made primarily of xylem and phloem. They transport water and minerals to the cells of leaves and carry away dissolved sugar. For photosynthesis, stomata must control the transpiration of water vapor and the exchange of carbon dioxide and oxygen.
What does photosynthesis produce?
Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.
Why do you cover one test tube in aluminum foil?
Why cover one test tube in aluminum foil? The foil blocks light.
What would happen if the leaf disks were boiled?
If we were to boil the leaf disks, what kind of results would you expect? All the leaf disks would sink because there would be no space for gases. The proteins would denature and not function properly, so photosynthesis would not be able to occur.
What happens if plants do not perform photosynthesis?
If photosynthesis does not occur in plants then plants cannot synthesize the food. The plants will not produce oxygen and then no animal life will be able to survive due to the absence of oxygen. We will not get oxygen, food, and life on this planet will be extinct.
How do you know if a plant is Photosynthesising?
Therefore, to test if a plant has been photosynthesising, you can test the leaf to see if starch is present….Investigating photosynthesis – starch and chlorophyll
- transported to the growing parts of the plant for use in respiration.
- transformed into cellulose , proteins and oils.
- turned into starch for storage.
Which tissue helps in photosynthesis?
Parenchyma tissues
Parenchyma tissues are found in the soft parts of the plant like the leaf. They help in photosynthesis and storage of food.
How is a plant adapted for photosynthesis?
The adaptations of leaf for photosynthesis are: Large surface area for maximum light absorption. The presence of chlorophyll containing chloroplast. Thin structure– Short distance for carbon dioxide to diffuse into leaf cells. The stomata that allow carbon dioxide to diffuse into the leaf and oxygen to diffuse out.
Why are all lymph nodes removed during neck dissection?
In general, the goal of neck dissection is to remove all the lymph nodes within a predefined anatomic area. Many of the lymph nodes removed during surgery will not prove to have cancer in them. Many patients wonder why so many non-cancerous lymph nodes must be removed; why can’t surgery be done to remove only the lymph nodes with cancer in them?
What is the procedure for radical neck dissection?
28 Surgical procedure: Radical Neck Dissection: Procedure is done under general anesthesia. Position the patient in reverse Trendelenbergs position with neck extended at atlanto-axial joint and head elevated 10 degree above the table. Face should be turned to the opposite side of the dissection.
When is a neck dissection considered a comprehensive dissection?
Fig. 1. Lymph node levels of neck Medina et al has suggested that the term”comprehensive neck dissection” be used whenever all of the lymph nodes contained in levels I through V have been removed. Hence, the radical neck dissection and modified radical neck dissection would each be considered a comprehensive neck dissection.
What is the role of neck dissection in upper aero-digestive tract malignancies?
As malignancies of the upper aero-digestive tract mainly metastasize to the cervical lymph nodes, neck dissections are performed along with surgical excision of these malignancies. 2. Relevant anatomy The cervical lymph nodes are surgically divided into six levels.