Tables, charts, and graphs

Question 1

Mia is investigating how the brightness of a lamp changes when different voltages are applied. She will record the voltage applied and the resulting light intensity. Which table below has the correct column headings, showing both the quantity and its SI unit?

Accepted Answer

Voltage (V) | Light intensity (lux)

Answer

Voltage (V) | Light intensity

Answer

Volt (V) | Light intensity (lux)

Answer

Voltage | Light intensity (lux)

Question 2

Lena is measuring how tall a bean plant grows each day for two weeks. She will record the day number (1‑14) and the plant’s length in centimetres. Which table shows the correct column headings for this data?

Accepted Answer

Day / Length (cm)

Answer

Day / Length

Answer

Length (cm) / Day

Answer

Day / Length (mm)

Question 3

Scientists examined early embryos of three vertebrate species—a frog, a chicken, and a mouse—at three developmental stages. The table shows whether each embryo has a (A) tail bud, (B) pharyngeal (gill) slit, and (C) notochord (✓ = present, ✗ = absent). Stage 1: Frog (A✓, B✓, C✓) Chicken (A✓, B✓, C✓) Mouse (A✗, B✗, C✓) Stage 2: Frog (A✓, B✓, C✓) Chicken (A✓, B✗, C✓) Mouse (A✗, B✗, C✓) Stage 3: Frog (A✗, B✗, C✗) Chicken (A✗, B✗, C✗) Mouse (A✗, B✗, C✗) Based on this pictorial data, which conclusion best identifies a relationship among these species that is not evident from the adult forms alone?

Accepted Answer

The frog and chicken embryos both have a tail bud and pharyngeal slits at stage 1, indicating they share a more recent common ancestor with each other than either does with the mouse.

Answer

All three species display the same set of embryonic structures, so they are equally related evolutionarily.

Answer

Because the mouse retains a notochord through all stages, it is the closest relative to the frog and chicken.

Answer

The absence of a tail bud in the mouse embryo shows that adult tail loss makes embryonic traits unimportant for determining relationships.

Try three questions

Mia is investigating how the brightness of a lamp changes when different voltages are applied. She will record the voltage applied and the resulting light intensity. Which table below has the correct column headings, showing both the quantity and its SI unit?

Lena is measuring how tall a bean plant grows each day for two weeks. She will record the day number (1‑14) and the plant’s length in centimetres. Which table shows the correct column headings for this data?

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