the two statements are 1 and 4
<h3><u>Answer</u>;</h3>
D. pteridophyte
<h3><u>Explanation;</u></h3>
- <em><u>Pteridophyte are vascular plants in the phylum plants that reproduce by releasing spores rather than seeds. </u></em>
Other characteristics of pteridophyte includes;
- <em><u>They show alternation of generations, that is the sporophyte generation and gametophyte generation are observed.</u></em>
- <em><u>Sporophytes has true roots, stem and leaves</u></em>
- <em><u>Sporangia are produced in groups on sporophylls</u></em>
B d is the correct answer
The size of our brains has increased since we became tools users.
Explanation:
Researches have shown that since we became tool users, the size of our brain has increase significantly. This is an evolutionary footprint in us. Our brain size has not always been the same.
- The earliest humans use very crude tools in their hunting.
- Modern man is full of technology and advanced tools.
- To get here, the brain has constantly been changing over time to accommodate more innovative faculties.
From this excerpt, one can deduce that the commentary is trying to prove Susan wrong by linking how the body part of humans have changed to adapt to the environment.
The second option presents the most logical explanation for this.
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The correct answer is: d. it contains many light-sensing columns called ommatidia
Ommatidia are units that form compound eyes of arthropods such as insects, crustaceans and millipedes (these are invertebrates) and make them very sensitive to motion. Ommatidia are composed of photoreceptor cells (visual detection) surrounded by support cells and pigment cells.
The eyes of vertebrates are more complex showing that progressive improvements in the structure of the eye occurred during the evolution.