Biology Answers

Exposure to weather can lead to a reduction in the performance and efficiency of photovoltaic systems. Researchers have used machine learning to develop a test which categorises solar panels as defective or non-defective, based on textural features of the solar cells extracted from thermal imaging [2].

In a sample of 260 solar panels, 130 were classified as defective by registered electrical power engineers. Of these, the machine learning test was able to correctly identify 126 defective solar panels. The test correctly classified all non-defective solar panels.

(a) Construct a binary classification table for the outcomes of the machine learning test, and calculate the sensitivity, specificity and accuracy of the test, showing all working.

The main advantage of asexual reproduction, in addition to its speed, is that it permits the propagation of advantageous makeups since the offspring are genetically with the parent to arise from the contributions of multiple different

2. Sexual reproduction, on the other hand, permits of traits,

ancestors

3. Certain plants produce body parts specialized for breakaway and dispersal that are known as

4. In grafting, the plant that is to be asexually propagated is known as the

which may be little more than a root e important that the two havetheir

this is attached to the

layers in contact with each other.

5. The production of by the seed plants largely circumvents the requirement found in fems, mosses, and the like for as a requirement for fertilization.

Tabulate the major features that distinguish the Agnathan, Chondrichthyes, and

Osteichthyes fish groups

List five ways that you can do that would be most helpful in protecting the environment and achieving sustainability.

Which of the following best compares the structures found in plant cells and animal cells? 

d. Plant cells have rigid cell walls and do not contain mitochondria or ribosomes while animal cells do.

a. Animal cells contain cell walls and a large central vacuole while plant cells contain cell membranes and many small vacuoles.

c. Plant cells contain rough endoplasmic reticulum and a Golgi apparatus while animal cells contain smooth endoplasmic reticulum surrounded by lysosomes.

b. Animal cells do not contain chloroplasts, cell walls, or a large central vacuole while plant cells do.

Which statement best describes why animals need to eat other organisms to get energy? 

b. they cells have mitochondria

c. they have adaptations for catching prey

a. their cells lack chloroplasts

d. they have digestive systems for breaking down food

The structure of the leaf best supports the process of? 

b. gas exchange for photosynthesis.

a. water absorption for transpiration.

c. energy absorption for cellular reproduction.

d. water absorption for cellular respiration.

Which of the following is most likely true of an animal that has wings for flying? *

d. it has bilateral symmetry

a. it has antennae

c. it has an exoskeleton

b. it has a backbone

The best method to determine the age of tree is *

a. count the number of leaves

d. find out the number of branches

b. count the number of annual rings

c. measure its diameter

A student is studying two plants that do not have vascular tissue, what can you infer about the plants? *

b. They will have large, flat leaves.

d. They pump out excess salt.

c. They live in dry environments.

a. They will remain fairly small.

Which best describes the arrangement of the xylem and phloem in a monocot plant? *

c. Xylem on the inside of the stem in rings and phloem on the outside in rings.

d. Paired bundles of xylem and phloem only in the center of the stem.

b. Paired bundles of xylem and phloem throughout the stem.

a. Phloem on the inside of the stem in rings and xylem on the outside in rings.

Statement 1 : Smaller endothermic animals have a greater surface area for their mass than larger Statement 2: Smaller animals lose heat at a faster rate than larger animals and require more energy to maintain a constant internal temperature. Statement 3 : A smaller endothermic animal has a higher BMR, per body weight than a larger endothermic animal *

b. only statements 1 and 2 are true

a. statements 1,2,3 are true

d. only statements 2 and 3 are true

c. only statements 1 and 3 are true