Sieve tube elements Study guides, Study notes & Summaries

PENN FOSTER BIOLOGY EXAM QUESTIONS WITH COMPLETE SOLUTIONS 100% VERIFIED LATEST UPDATE 3 parts of human ear The outer ear- collects sound waves from the environment through skin-covered flaps of cartilage called the pinna. The outer ear sends these waves to the middle ear. The middle ear- sends sound waves to the inner ear. An air-filled cavity and three small bones transmit e to the middle ear results in conduction deafness. The inner ear -contains the vestibule, semicircular canals, and ...

WSU Biology 106 Exam Questions AND CORRECT DETAILED ANSWERS Which of the follow statements concerning the is NOT correct? a) in the most-recent 550 million years Earth has experienced five mass-extinction events b) approximately 250 million years ago all of the continents were coalesced in a single, giant, super continent c) the first living organisms were Prokaryotes d) oxygen started accumulating in Earth's atmosphere with the invasion of land by plants approximately 400 million yea...

BOT3015 Final 2024 Exam Answers All Correct In woody plants the cork cambium produces new tissues that increase the girth of the stem. When this happens the epidermis is sloughed off and replaced by the __________________ -ANSWER- periderm What is the function of phloem in plants -ANSWER- food conduction all components of phloem -ANSWER- sieve-tube members, companion cells What is the main function of xylem in plants -ANSWER- to transport water and minerals throughout the plant The ou...

ISA Arborist Chapter 1 Questions and Answers Already Passed Abscission Zone Area at the base of the petiole where cellular break down leads to leaf and fruit drop. Absorbing root Fine,fibrous roots that take up water and minerals. Most absorbing roots are within the top 12 inches (30cm) of soil. Adventitious bud Bud arising from a place other than a leaf axil or shoot tip,usually as a result of hormonal triggers. Aerial root Aboveground roots. Usually adventitious in nature and sometimes havi...

Transport in plants - A level AQA Biology Rated A+ Types of tissue Xylem tissue and phloem tissue What the xylem tissue does Transports water and mineral ions in solution. These substances move from the roots to the leaves What the phloem tissue does and down the plant Structure of the xylem Transports organic substances in a solution (such as sugars) both up Very long, tube-like structures that are formed from dead cells (vessel elements) joined end to end. there are n...

1 BROOKS BIODIVERSITY UNIT 3 EXAM | QUESTIONS & ANSWERS (VERIFIED) | LATEST UPDATE | GRADED A+ Plants Architecture Correct Answer: Plant needs i. collection & conversion of solar energy -> leaves ii. positioning & support of leaves -> stems iii. anchorage & absorption -> roots iv. transport -> vascular system Leaf Structure Correct Answer: Epidermis, Mesophyll, and Vein (Vascular Bundle) Epidermis contains what? Correct Answer: - Cuticle - Guard cells with Stomata ...

AQA A LEVEL BIOLOGY Paper 1 2024 What is the function of the cell membrane? - ANS To control what enters and leaves the cell, acts as a barrier between the cell and its environment. What structural feature of the cell membrane allows substances to enter/leave? - ANS Partially permeable What is the fluid mosaic model? - ANS States that a membrane is a fluid structure (because phospholipids are constantly moving) with a "mosaic" of various proteins embedded in it Describe t...

what is passive immunity and how is it produced? - ANSWER produced by the introduction of antibodies into individuals from an outside source. immunity is acquired immediately. no contact with pathogen/s needed. short term immunity: antibodies aren't replaced when broken down, memory cells not formed. e.g. anti-venom what is active immunity and how is it produced? - ANSWER produced by stimulating the production of antibodies by the individuals own immune system. contact with pathogen/s...

A virus has been discovered. The virus has no envelope and consists of a helical capsid surrounding its dsDNA genome. During assembly, the pac site of the genome ensures that it is properly packaged by the capsomeres. Which of the following amino acids is/are expected to be on the capsomere domain that interacts with the pac site? A. lysine B. methionine C. glycine D. arginine E. A and D Answer: A and D Explanation: DNA has a negative charge, so positively charged amino acids, such as...

Brooks Biodiversity Unit 3 Quizzes with 100% Correct Answers Coevolution - Answer- adaptations go hand in hand, with one species evolving with the other Plant/Animal Hierarchy - Answer- Cells --> Tissues --> Organs 3 Plant Tissues - Answer- 1. Dermal ("Skin") 2. Vascular ("Veins") 3. Ground Tissue ("support tissue") Leaves - Answer- Responsible for collection and conservation of solar energy Main photosynthetic organ of most vascular plant Stems - Answer- Positioning and su...