Question

problem 1 - analyze the cladogram (answer the questions in the table for each t... according to the above diagram, which traits can be changed points in a derived character, or evolving... (the) chart? the table to predict below? match the letter to its character. add the (diagram) will be graded for... and individually. 6 does not represent the exhibited phylogeny for... and their relatives.

Explanation:

To solve this dichotomous key problem for classifying arthropods (and related organisms), we analyze each characteristic and match it to the organisms:

Step 1: Analyze Characteristic A (Topmost Branch)

The first split (A) likely distinguishes organisms with a segmented body (arthropods and annelids) from those without. The worm (annelid) has a segmented body, so A corresponds to Segmented Body.

Step 2: Analyze Characteristic B (Next Branch)

After A (segmented body), B splits into organisms with jointed appendages (arthropods) vs. those without (annelids, like the worm). Arthropods (spider, insects) have jointed appendages, so B corresponds to Jointed Appendages.

Step 3: Analyze Characteristic C (Leg Count)

Next, C splits based on leg count. Spiders have 8 legs, while insects have 6. So C corresponds to 8 Legs (for spiders), and the next branch (leading to D/E/F) corresponds to 6 Legs (for insects).

Step 4: Analyze Characteristic D/E (Crushing Mouthparts)

Among insects, some have crushing mouthparts (e.g., ants, beetles) vs. others with different mouthparts. So D/E likely corresponds to Crushing mouthparts.

Step 5: Analyze Characteristic F (Cerci)

Cerci are abdominal appendages (e.g., in earwigs, cockroaches). So F corresponds to Cerci (abdominal appendages), distinguishing insects with cerci from those without (e.g., flies, dragonflies, butterflies).

Step 6: Analyze Characteristic G/H (Winged vs. Winged with Scales)

Flies, dragonflies, and butterflies differ in wings: Flies have 1 pair, dragonflies 2 pairs, butterflies 2 pairs with scales. So G/H further distinguish wing types, but the key here focuses on the labeled characteristics.

Final Matches (Assuming the Left Column is Characteristics, Right is Organisms):

• A: Segmented Body (matches the worm)
• B: Jointed Appendages (matches spiders/insects)
• C: 8 Legs (matches spiders)
• D/E: 6 Legs (matches insects)
• F: Cerci (abdominal appendages) (matches insects with cerci, e.g., earwigs)
• G: Legs (general, but 6 legs for insects)
• H: Crushing mouthparts (matches insects with crushing mouthparts, e.g., ants)

Answer:

(Filling the Blanks):

• A: $\boldsymbol{\text{Segmented Body}}$
• B: $\boldsymbol{\text{Jointed Appendages}}$
• C: $\boldsymbol{\text{8 Legs}}$
• D/E: $\boldsymbol{\text{6 Legs}}$
• F: $\boldsymbol{\text{Cerci (abdominal appendages)}}$
• G: $\boldsymbol{\text{Legs}}$ (or specific to 6 legs)
• H: $\boldsymbol{\text{Crushing mouthparts}}$

(Note: The exact labels depend on the dichotomous key’s structure, but this follows standard arthropod classification logic.)