BIO1022 Life on Earth_5 Flashcards
How does root growth differ from shoot growth?
Roots lack meristematic tissue and have a cap at the tip.
What is an Auxin is a plant hormone that:
Is produced primarily in shoot apical meristems and young leaves and results in cells elongating
What is an outcome or advantage of a two-cycle heart when compared with an amphibian heart?
A two-cycle heart:
* Increases the efficiency of the circulatory system * Creates a true double circulatory system * Separates oxygenated and non-oxygenated blood.
What part of the bacteria controls resistance to antibiotics?
Its genetic make up
Fill the blanks
Bone tissue consists of __________ cells in a matrix of __________.
Bone tissue consists of osteoblast cells in a matrix of collagen and calcium phosphate.
How does the shoot apical meristem maintains a constant size, even though it is a zone of active cell division?
Cells further from the shoot tip ceasing to divide
What is a Tetrapoda?
A monophyletic group that had a common ancestor with 4 legs.
When analysing why an animal exhibits a particular behaviour, Tinbergen divided the question of “why does an animal exhibit a particular behaviour ?” into four parts
- Causation
- development
- adaptive function
- evolutionary history.
These four parts refer to:
Causation = Physiological causes
Development = Genetic and environmental influences
Adaptive function = Improving the individual’s ability to survive and reproduce
evolutionary history = How the behaviour evolved over time
Reefs are being destroyed at an alarming rate. Pollution, overexploitation and ocean acidification are major threats. Global warming is also contributing to their demise by raising sea water temperatures above the range in which corals thrive. What is the most correct order of sequences in temperature- induced coral bleaching?
- Increased temperature affects algae within coral polyp
- Algae produces reactive O₂
- Species coral’s immune system activates
- Attacks and expels algae
- Coral bleaching
Material properly considered part of a pollen grain includes:
Male gametophyte and sporopollenin
Which of the following is NOT consistent with distinguishing an animal from other life forms?
- multicellular, autotrophic, eukaryote
- structural proteins such as collagen
- impulse conduction and movement
- regulatory genes called Hox genes
- sexual reproduction
The correct answer is: multicellular, autotrophic, eukaryote
Toll like receptors (TLRs) are?
TLRs are a family of PRRs
PRR = Pattern recognition receptors
Characteristic of angiosperms include:
4 characteristics
Coevolution with animal pollinators
Double internal fertilization
Pistils
Fruit
When would resource partitioning most likely to occur?
Between sympatric populations of species with similar ecological niches.
How is it possible that plants can choose mates when they are sessile?
By having male and female reproductive structures that mature at different times
