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The fine yellow dust that covers your car in the early spring is the ________ and is a ________ gametophyte.

_____________ cells were the first inhabitants on Earth.

Which of the following phyla is NOT correctly matched with its characteristics?

In deuterostomes, the ___________ develops from the blastopore.

Which of the following statements is true when comparing poriferans and cnidarians?

Chloroplasts are the organelle of photosynthesis. Chloroplasts contain two membranes, a circular DNA chromosome, and are reproduced independently from a plant cell by a process similar to binary fission. This evidence supports the theory that chloroplasts were derived from ___________.

As more and more species of plants colonized the land, they provided a source of ________ for animals, and evolved strategies to protect themselves from the animals.

Data for outcome Y and single predictor X was collected on 25 observations. We’re given the following R output from a simple linear regression model modeling outcome Y and predictor X: > reg = lm(y ~ x) > summary(reg) Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) 0.8542 1.5503 -0.551 0.586939 x 0.9121 0.2190 4.165 0.000373 *** — Signif. codes: 0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1 Residual standard error: 3.058 on 23 degrees of freedom   We also know that

Which of the following does NOT correctly describe the nematodes?

The ____________ is used for support in the phylum Porifera while the mesoglea is used for support in the phylum Cnidaria.