What do all seed plants use to reproduce

Biology

1 answer:

KIM [24]3 years ago

5 0

Answer:

Seed are generated by apomixis which is a form of asexual reproduction.

Explanation:

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Complete the phylogenetic tree by matching each characteristic that arose during the evolution of animals to its correct positio

spayn [35]

Answer:

The correct characteristics are -<em><u> tissue, coelom, segmentation, endoskeleton, and backbone</u></em> from top to bottom boxes.

Explanation:

This phylogenetic tree showing the evolution and relatedness of the different organisms on their shared characteristics. In the given phylogenetic tree there are some characters are missing and we can predict or state them on the basis of evolution and studying the characteristics.

After the Porifera phylum tissue-level organization is found in the organism hence Tissue would be placed in the first box.

The coelom is found organisms above the Nematoda level, which further include a character segmentation in Annelida and Arthropoda. Another lineage from arising with the coelom organism that included endoskelton and backbone.

Thus, The correct characteristics are - tissue, coelom, segmentation, endoskeleton, and backbone from top to bottom boxes.

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3 years ago

Adaptations often give organisms a competetive edge. true or false

valkas [14]

Adaptations can give an organism a competitive edge but adaptations are not always used for completion against other species

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3 years ago

Approximately 40% of living ferns are tropical epiphytes, a fact that supports the hypothesis that:

MA_775_DIABLO [31]

Around 40% of living ferns are tropical epiphytes (plants that live on the surface of another plant), a reality that backings the theory that the starting point and inevitable control of angiosperms in tropical woodlands both uprooted and made new open doors for other plant ancestries.

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3 years ago

Nuclei with an _____________ number of protons and neutrons possess a property called spin. Nuclear spin can be thought as eithe

andriy [413]

Answer:

Explanation:

$\text{We are to fill in the blanks with the correct words that best suit the blanks}$

$\text{Nuclei with an} \ \mathbf{odd} \ \text{number of protons and neutrons possess a property }$

$\text{called spin. Nuclear spin can be thought as either up or down with the spin }$

$\mathbf{magnetic \ field.}$

$\text{When a molecule is placed in an NMR, a large} \ \mathbf{magnetic} \ \text{field is applied making the }$ $\text{spin states become of unequal energy, with the spin that generates a magnetic field }$ $\text{in the same direction of the applied magnetic field being}\ \mathbf{ lower} \ \text{ in energy. The NMR }$ $\text{then uses} \ \mathbf{ radio \ frequency}\ \text{ to 'flip the spin' of each nuclei, wherein each nuclei will }$ $\text{require a specific energy level of radiation that corresponds to its difference in }$ $\text{energy of spin states, this is often called the nuclei's}\ \ \mathbf{resonance } \ \text{frequency, }$ $\text{which is measured by the NMR and translated to teh final spectra.}$